Features and Benefits: * Forged steel construction * Hardened carbide tipped anvil and spindle * Spindle lever locks * Smooth friction turn knobs * Accurate to .0001 * Includes: * 3M101 * 3M102 * 3M103 This is a 3 piece set, which the adjustment wrenches and spacers are included. All packaged in a plastic blow-molded case for easy storage.