Sunex 2625 1/2" Drive Head Bolt Socket Set, 5-Piece 4-inch length reaches past cam and rocker assembly to service head bolts Includes head bolt sockets for Nissan, Toyota, Honda, and Ford/GM cars and trucks Forged from high quality chrome-molybdenum alloy steel for maximum durability Thin profile sockets will reach through the access hole and past overhead camshaft All Sunex impact sockets meet or exceed ASME specifications