Cutting, matte finished, closed loop design.Dia 48mm-12t (BB48-12)Fit Praxis Works M30 OSBBColour: blackMaterial: stainless steelSize: 24x5.5cmPackage Contents:1 * Bicycle Bottom Bracket WrenchOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.