CMB 0060 Details Compbrakes Comp-B16 Billet Calipers are 4 piston and light weight. Used on many race cars Escorts GP4 / M16 Direct replacement etc. Which have performed outstanding. Housing material billet aluminium 7075T6. Hard anodised in titanium/black/silver to 50 microns Radial mounting centres 120mm Side/bottom entry feeding ports Pistons stainless steel / titanium 1.5" x 1.5" Disc Thickness range 20.5 - 25mm Suitable for 225.5mm to 295mm rotors Weight 1.78lbs Compbrake.