ICR66 is listed in Intercable Tools' R-series of tubular cable lugs

designed for use with WXP 80

Varekode: 4PTS8-1

The product information indicates that the bit is intended for general screw connections in trade and industry

Bit serie 4 lige kærv 1/4": 0,6x3,5x50mm PS055 ICR66 is listed in IntercableWera 800 4 Z slotted screwdriver bit (05059310001) The Wera 800 4 Z (05059310001) is a single screwdriver bit from Wera's 800 4 Z family, specified for slotted (flat) screws. The bit features a 1 4" hexagon drive (Wera connecting series 4) and is dimensioned with a 0. 6 mm blade thickness, 3. 5 mm blade width, and 50 mm blade length. What the product is and does The bit is designed to engage slotted screws using a 1 4" hexagon holder. Wera describes