Proto J5260-06 3/8 Drive Extension 6
https://www.sawab.app/shop/j5260-06-proto-j5260-06-3-8-drive-extension-6-1285
https://www.sawab.app/web/image/product.template/1285/image_1920?unique=b300c89
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Made from alloy steel.Heat treated for strength and durability.