Item Type: Bicycle Crank Alloy Bottom Bracket Adjuster Weight: Approx. 45g / 1.6oz Material: 7075 Aluminum Pretightening Ring + Aluminum Alloy Screw Purpose: Perfect adjustment of bearing clearance Compatibility: Suitable for DUB cranks, including XX1 Eagle DUB and X01 Eagle DUB; flanged inner ring is not compatible with fat bicycle crank Axis Diameter: Approx. 28.99mm / 1.1in Product Size: Approx. 7 x 35mm / 0.3 x 1.4in Durable construction: Made of 7075 aluminum pretightening ring and aluminum alloy screw for enhanced strength and longevity Designed for adjusting inner bearing clearance; compatible with DUB crank preload ring kit and crank shaft bearing clearance spare part kit Available in multiple colors to suit personal preference Simple operation: Easy to install, use, and remove Package includes: 1 x Pretightening Ring