The Otis Soft Rubber Vise Jaws are an essential item to protect your firearm while keeping it secure in a vise. Works with light duty vises up to large, heavy duty vises (minimum vise jaw measurement is 4”L x 0.5”H). Composed of a non-slip rubber material, these soft jaws have the perfect balance of hardness to keep even the smallest parts clamped and flexibility to mold to the various shapes of a firearm.