For easy removal and tightening of brake calliper fastening bolts.
The special spherical head of the screwdriver bits also allows to work at an offset angle, for examples in areas which can only be accessed with difficulty.
Parts list (Text): 1x KL-4021-3107 A - Screwdriver bit 7 mm (waf) 1x KL-4021-3109 A - Screwdriver bit 9 mm (waf) 1x KL-4021-3111 A - Screwdriver bit 11 mm (waf)