The Roughneck 64400 is a 14 inch & a 24 inch Gorilla bar twin pack & is made from hardened & tempered drop forged alloy steel. The 64410 Gorilla bar has a patented shape that makes a difference when the touchiest of jobs are at h&. The Roughneck 64410 has a wide surface end for nail pulling, opening crates, lifting slabs or concrete breaking. This Gorilla bar has an oval shaped body for a more comfortable grip & the upmost torque & leverage. As like most Roughneck bars & levers they are made from a high grade of forged steel & a one piece construction for a longer life. Wide surface. Oval shaped. High grade. Forged steel construction. One piece.