Feature: The front and frame are both equipped with the same size disc on the A-pillar, and the adapter uses the same specifications The front and frame are both equipped with the same size disc on the B-pillar, and the adapter uses different specifications For example, the F180R160 adapter is equipped with a 180mm disc on the front fork and a 160mm disc on the frame Specification: Product name: B-pillar-disc brake adapter Specifications: F160R140 Color: Black Material: Aluminum alloy Size: As shown Weight: Bracket-14.6g, M6*18 screw-6g Usage: 1-B-pillar (IS) front fork with 160mm disc 2-B-pillar (IS) frame with 140mm disc Package Content： 1*B-pillar-disc brake adapter Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Compatibility - Bike Black Disc Brake Caliper Adapter for B Pillar Front 160mm and Rear 140mm Good Performance Materials - These bike accessories are made of premium material, ensuring their durability and long-lasting performance. Optimal Performance - These accessories offer versatility and adaptability to different cycling needs and provide optimal performance and reliable functionality enhance the riding experience and ensure safety. Easy Installation - These accessories can be easily installed on your bike to get your bike running again. After-sale Serive - We provide high quality products, if there is any problem with our product, please contact us.