DUDE BUSTER: "BUST THEIRS, NOT YOURS." High Impact Deep Sockets (allows the bolt to travel over 7", deepest on the market) for tightening or breaking nuts. The 1/2" Drive End and the Socket End are CAST with S-5 Striking Steel, then HEAT TREATED for SUPERIOR STRENGTH. The ends are then FUSED onto pipe and become a single piece unit (no breaking points) that is fully balanced so there is no wobble (easier on the impact and the user). Each size is marked with dimensional nut size and bolt size. Designed to be used and abused for Heavy Impact Work with air or electric impacts.