diff --git a/examples/unwrap-eth.ts b/examples/unwrap-eth.ts
new file mode 100644
index 0000000..d5222d2
--- /dev/null
+++ b/examples/unwrap-eth.ts
@@ -0,0 +1,16 @@
+import { parseEther } from "ethers";
+import { signAndSendTransaction } from "../src/chains/ethereum";
+import { wethInterface } from "../src/utils/interfaces";
+import { setupAccount } from "./setup";
+
+const run = async (): Promise<void> => {
+  const sender = await setupAccount();
+  const sepoliaWETH = "0xfff9976782d46cc05630d1f6ebab18b2324d6b14";
+  const ethAmount = 0.01;
+  const callData = wethInterface().encodeFunctionData("withdraw", [
+    parseEther(ethAmount.toString()),
+  ]);
+  await signAndSendTransaction(sender, sepoliaWETH, 0, callData);
+};
+
+run();
diff --git a/examples/wrap-eth.ts b/examples/wrap-eth.ts
new file mode 100644
index 0000000..716759a
--- /dev/null
+++ b/examples/wrap-eth.ts
@@ -0,0 +1,13 @@
+import { signAndSendTransaction } from "../src/chains/ethereum";
+import { setupAccount } from "./setup";
+
+const run = async (): Promise<void> => {
+  const sender = await setupAccount();
+  const sepoliaWETH = "0xfff9976782d46cc05630d1f6ebab18b2324d6b14";
+  const ethAmount = 0.01;
+  const deposit = "0xd0e30db0";
+
+  await signAndSendTransaction(sender, sepoliaWETH, ethAmount, deposit);
+};
+
+run();
diff --git a/src/abis/WETH.json b/src/abis/WETH.json
new file mode 100644
index 0000000..ba877d3
--- /dev/null
+++ b/src/abis/WETH.json
@@ -0,0 +1,279 @@
+[
+  {
+    "constant": true,
+    "inputs": [],
+    "name": "name",
+    "outputs": [
+      {
+        "name": "",
+        "type": "string"
+      }
+    ],
+    "payable": false,
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "constant": false,
+    "inputs": [
+      {
+        "name": "guy",
+        "type": "address"
+      },
+      {
+        "name": "wad",
+        "type": "uint256"
+      }
+    ],
+    "name": "approve",
+    "outputs": [
+      {
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "payable": false,
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "constant": true,
+    "inputs": [],
+    "name": "totalSupply",
+    "outputs": [
+      {
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "payable": false,
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "constant": false,
+    "inputs": [
+      {
+        "name": "src",
+        "type": "address"
+      },
+      {
+        "name": "dst",
+        "type": "address"
+      },
+      {
+        "name": "wad",
+        "type": "uint256"
+      }
+    ],
+    "name": "transferFrom",
+    "outputs": [
+      {
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "payable": false,
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "constant": false,
+    "inputs": [
+      {
+        "name": "wad",
+        "type": "uint256"
+      }
+    ],
+    "name": "withdraw",
+    "outputs": [],
+    "payable": false,
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "constant": true,
+    "inputs": [],
+    "name": "decimals",
+    "outputs": [
+      {
+        "name": "",
+        "type": "uint8"
+      }
+    ],
+    "payable": false,
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "constant": true,
+    "inputs": [
+      {
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "name": "balanceOf",
+    "outputs": [
+      {
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "payable": false,
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "constant": true,
+    "inputs": [],
+    "name": "symbol",
+    "outputs": [
+      {
+        "name": "",
+        "type": "string"
+      }
+    ],
+    "payable": false,
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "constant": false,
+    "inputs": [
+      {
+        "name": "dst",
+        "type": "address"
+      },
+      {
+        "name": "wad",
+        "type": "uint256"
+      }
+    ],
+    "name": "transfer",
+    "outputs": [
+      {
+        "name": "",
+        "type": "bool"
+      }
+    ],
+    "payable": false,
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "constant": false,
+    "inputs": [],
+    "name": "deposit",
+    "outputs": [],
+    "payable": true,
+    "stateMutability": "payable",
+    "type": "function"
+  },
+  {
+    "constant": true,
+    "inputs": [
+      {
+        "name": "",
+        "type": "address"
+      },
+      {
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "name": "allowance",
+    "outputs": [
+      {
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "payable": false,
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "payable": true,
+    "stateMutability": "payable",
+    "type": "fallback"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "name": "src",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "name": "guy",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "name": "wad",
+        "type": "uint256"
+      }
+    ],
+    "name": "Approval",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "name": "src",
+        "type": "address"
+      },
+      {
+        "indexed": true,
+        "name": "dst",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "name": "wad",
+        "type": "uint256"
+      }
+    ],
+    "name": "Transfer",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "name": "dst",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "name": "wad",
+        "type": "uint256"
+      }
+    ],
+    "name": "Deposit",
+    "type": "event"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "name": "src",
+        "type": "address"
+      },
+      {
+        "indexed": false,
+        "name": "wad",
+        "type": "uint256"
+      }
+    ],
+    "name": "Withdrawal",
+    "type": "event"
+  }
+]
\ No newline at end of file
diff --git a/src/utils/interfaces.ts b/src/utils/interfaces.ts
index 4c6133d..eeecd7d 100644
--- a/src/utils/interfaces.ts
+++ b/src/utils/interfaces.ts
@@ -1,7 +1,8 @@
 import { ethers } from "ethers";
 import erc721ABI from "../abis/ERC721.json";
 import erc1155ABI from "../abis/ERC1155.json";
-import seaport from "../abis/Seaport.json";
+import seaportABI from "../abis/Seaport.json";
+import wethABI from "../abis/WETH.json";
 
 export function erc721Interface(): ethers.Interface {
   return new ethers.Interface(erc721ABI);
@@ -12,5 +13,9 @@ export function erc1155Interface(): ethers.Interface {
 }
 
 export function openSeaInterface(): ethers.Interface {
-  return new ethers.Interface(seaport);
+  return new ethers.Interface(seaportABI);
+}
+
+export function wethInterface(): ethers.Interface {
+  return new ethers.Interface(wethABI);
 }