Push-Pull Parking/Emergency Brake Valve, Bulkhead mount, requires 7/8" mounting hole. Made of durable EGC (Engineering Grade Composite). A better replacement for the PP-1. Knob, pin and mounting nut shipped with valve un-assembled. Replaces Part Number 12406X. System Brake. Knobs Included: KN20903
Product Features:- Made of durable EGC (Engineering Grade Composite)