Note: Please allow 1-2mm errors due to manual measurement Packaging includes: 2pcs Adapter and 4pcs screws and 8pcs spacers are included. PM-A Adapter Specifications: Material: Aluminum alloy Colour：Black,Red,Gold,Blue,Titanium Length: approx. 102 mm Bolt Bolt distance: approx. 74mm Weight:approx. 43.2g PM F/R 180mm Adapter Mounting positions: Rront and Rear PM F/R 203mm Adapter Mounting positions: Front and Rear This brake adapter is used to convert a 160 mm rotor to a 180/203 mm rotor Post Mount.Brand new and high quality.Fit Front&Rear 180/203mm Rptor. IS-B Adapter Specifications: Material: Aluminum alloy Colour：Black,Red Weight: approx. 36.9g Length: approx. 85 mm Bolt Bolt distance: approx. 74mm IS Rear 180mm Adapter Mounting positions: Rear IS Front 203mm Adapter Mounting posit.