Tripp Lite's professional grade high-volume Punch Down Cable Installation Tool with adjustable impact is the perfect multi-purpose tool for punching down Cat5/Cat6 cable to 110 jacks and patch panels or telephone wire to 66M blocks. Each blade (110 or 66) contains a cutting and non-cutting side. The blade not being used is stored in the handle compartment. Adjustable High/Low actuation setting accommodates termination requirements or installer preference. Professional-Grade Impact Punch Down Installation Tool with 110 & 66 Blades- Professional Installer Grade 110/66 Impact Punch Down Tool- Both blades (110 & 66) have cutting and non-cutting sides - Handle compartment for storing blade not in use- Adjustable impact preference- Rugged Polyacetal Resin frame for long-life use