Features: Easy To Use: This centre shaft mounting kit allows you to easily mount and remove centre shafts and bearings. Stainless steel screws with fine steps and high strength. Universal: This bottom bracket assembly kit is suitable for most types of mountain bikes road bikes and city bikes.Exquisite CNC twisted design good thread absorption. Rugged And Durable: This bicycle maintenance tool set is mainly made of aluminum alloy and stainless steel which is rust-proof and not easy to break. Surface anodized polished light weight. Portable: This bicycle center removal tool set is small and light which is easy to carry or store when going out. It is not easy to bend. Hold it with both hands and slowly apply pressure to install it. Where It Fits: This central mounting kit is a great choice for use at home in apartments bike repair shops and more. High strength anti-skid flat push wide application range. Specifications: Materials: Aluminum Alloy Stainless Steel Dimensions (Length x Width x Height): Approximately. 27 x 17 x 5 cm/10.63 x 6.69 x 1.97 in Note: Due to different computer resolutions there may be a little color distortion. Due to different hand measurements there may be slight errors. includes: 1 Set Bottom Bracket Installation Tools