Original Bosch catch disk (part number 2600190070) — a direct replacement for the indexing/ratchet mechanism inside compatible Bosch percussion and combi drills. This small, hardened steel catch disk restores positive engagement in the gearbox so the drill switches cleanly between modes and holds position under load.

Common applications: fits Bosch PSB 680-2 RE, PSB 750-2 RE, CSB 700-2 RE and related GSB/PSB 18-2-series percussion/combi drills. If your drill’s mode selector is slipping, jumping, or won’t index, this is the part to replace.

Simple to swap into the gearbox/selector assembly during routine service — inspect surrounding shims, springs and the ball detent while you’re inside the head to ensure reliable operation after reassembly. This is the genuine Bosch part by number 2600190070 for a factory-style fit and function.

Browse our full range of Bosch drill parts.