1、Narrow Wide Teeth Alternate Design: The chainring is designed with narrow teeth and wide teeth alternately, which makes the chain more stable and smooth, and the chain is not easy to fall off. 2、Standard Teeth Design: The chainwheel adopts standard teeth design to ensure the best chain retention, increase service life and reduce friction and noise. 3、Increased Grip: The single chainring increase the grip, so that you no longer worry about getting off the chain, and easily pass the bumpy road. 4、Steel: Made of steel material, the chainring has high strength, strong resistance to deformation, and is durable. 5、Application: Direct mount single chainring, the gears are offset inward by 3mm/0.1in, it is suitable for GXP chains. Item Type: Direct Mount Single Chainring for GXP Material: Steel Product Color: Black Product Weight: Approx. 154-196g / 5.4-6.9oz Offset: 3mm / 0.1in (the distance of the inward offset of the tooth piece) 1 x Bicycle Chainring