Heavy Duty Punch Tool has High/Low Impact Selector, and a Cavity in the Top to store a 66 or 110 Blade (66 blade included).
Spare Blade locks into the Cavity in the tool, and releases easily with a twist of the Release Knob.
Uses industry standard 814 Type Blades.
NOTE: You MUST use a proper Punch Tool to terminate wires onto 66, 110, BIX and Krone Blocks and Jacks. If you use a screwdriver to force the wire into the connection, you'll destroy the connection (spreading out the pin), causing strange intermittent problems until the Block is replaced.