Product Description Effective Length: 8.70 in. Camshaft Spline Count: 28 Camshaft Spline Diameter: 1.50 in. Brake Diameter: 15.00 in. Head Type: 8 OE Mfg.: Meritor Brake Hardware Kit: KIT8824HD Paired Camshaft: 2210Q8181 Camshaft Repair Kit: KIT8883