Features: Please check the compatibility of this tool before purchase. do not purchase if your bottom bracket is not a 16notch type or is not in 44mm 40.5mm or 39mm diameter. High-quality bicycle spanner,bike bottom bracket wrench is carbon steel. long hand, comfortable grip, energy saving, convenient bicycle bb-cup.installation and removal. suitable for heavy duty workshop, high strength and durability. Compatible-with shimano hollowtech-ii/bb9000, bbr60, m8000, sram-dub, truvativ-gxp also fits disc brake-rotor lockrings with 16 external notches. Portable,it is designed with compacts-overall structure, making it portable. Flexible,it is long enough to give you adequate leverage-for installing and removing bb-with the-force you-needs. Specifications: Material:Stainless Steel Note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the picture may not reflect the actual color of the item. Package includes: 1 Piece Bicycle Bottom Bracket Wrench