Epsilont EPS2000PD Punch Down Tool with 66, 110 and Krone Blades Multifunction, Universal, Network Wire Cat6/Cat5e/RJ11/12 INTERCHANGABLE BLADES - Blades are Interchangeable and Reversible Between 110 and Krone Standards PREMIUM QUALITY - Epsilont Punch Down Tool has a Sturdy Design and is Made of High Quality, Durable Materials that will last a lifetime. Professional, Installer Grade 110/66 Impact Punch Down Tool. PRACTICAL, DURABLE and CONVENIENT - Ergonomic Design for Fast and Low Effort for various cable termination applications. Compact Design with Easy Grip Handle. All Steel Construction for Durability. UNIVERSAL DESIGN - Both blades (110 & 66) have cutting and non-cutting sides. Handle compartment for storing blade not in use. Adjustable impact preference, Twist and Lock Style Blades. 30 DAY MONEYBACK GUARANTEE - If you don't absolutely love our product, return it no questions asked.