1) Haldex automatic slack adjuster for application of ROR 2) Color: green, zinc plated, blue, black, etc. with TUV: TS16949 ce For heavy-duty trucks and trailers. Haldex automatic slack adjuster for application of ROR. Spline type: SAE 1 1/2'' 10 C; 5 holes, 10 teeth, 14mm dia. bushing; color: green, zinc plated, blue, black, etc.with TUV: TS16949 certificated