IMPACT PUNCH DOWN TOOL PRESSURE ADJUSTMENT 110/66 BLADE NETWORK WIRE PUNCH DOWN CABLE CAT5E CAT6 RJ Professional, Installer Grade 110/66. Impact Punch Down Tool. Adjustable impact preference. Both blades (110 & 66) have cutting and non-cutting sides. Offers reliable, easy-to-use operation. Handle compartment for storing blade not in use. Twist and Lock Style Blades.