110 and 66 Punch Down Tool: Keystone Punch Down Tool that cutting and punching down are carried out at the same time, with a sharp knife edge and fast punch down, suitable for network keystone jacks, patch panel. Data Punchdown Tool with Removable Blade: Double cutter head design, cut the excess cables while punching down. Precise blades are interchangeable and reversible between 110 and 66 standards. Ergonomic Design: Adjustable impact-force settings (LO/HI) for various cable termination applications, a handy hole in the bottom to store an extra blade. Multi Function: A Multi Function Punch Down Tool with wirepuller & flat blade pull outs on the sides, which easily clean up the extra cables. Package Content: 1 x Professional Punch Down Tool with 110 and 66 blades+1 x Mini Wire Stripper. 18 Months Warranty for quality problem.