The FCP12A is a servomount type potentiometer with ball bearings and rear extended pin terminals.
Extra taps (available up to 1 tap), shaft with front and rear extension (rear shaft with 1mm dia. and 10mm length), with stopper (rotating angle becomes 310º and stopper strength is 0.3N·m [3kgf·cm]), special electrical travel, shaft dia. (ø3.175mm) bushing with inch dimensions, special machining on the shaft.