Platinum Tools 13157C PRO-Strike Punchdown Tool, with 66, 110 Blades, Clamshell packaging Terminate and cut Cat3/5/5e/6 cables 630, Krone and BIX style interchangeable blades Bayonet style (twist & lock) blade retention socket is compatible with industry standard tools and blades Adjustable low and high force impact settings are precisely controlled to meet the industry standard 8762D spec Spare blade storage compartment in the handle