The Apex EX-250-6 is a 6 long, 1/4 hex extension for 1/4 square drive sockets. It is made of tool steel and features a pin lock. Apex EX-250-6 Specifications: Brand: Apex® Product Type: Hex Extension Drive Size: 1/4 1/4in Drive Type: Hex Square Overall Length: 6in Material: Tool Steel Material Category: Metal End A Size: 1/4in End B Size: 1/4in End A Gender: Male End B Gender: Male For Use With: 1/4 in Square Drive Sockets This listing is for Each Brand Name: Apex Product Type: Hex Extension Drive Size: 1/4; 1/4in Drive Type: Hex; Square Overall Length: 6in Material: Tool Steel Material Category: Metal End A Size: 1/4in End B Size: 1/4in End A Gender: Male End B Gender: Male For Use With: 1/4 in Square Drive Sockets Length: 6in Type: Hex x Square