Product Description The FSA bottom bracket tool E0139 is professional grade. Specifications:Function:installation & removal of bottom bracketsTool Type:socketType:multi-toothDrive:1/2"Compatibility:FSA MegaExo, Shimano cartridge bearingFeatures:forged and CNC-machinedwith laser-etched logoManufacturer Number:230-2210 Contents:1 x FSA E0139 bottom bracket tool Weight: black anodized: 374 g Manufacturer: F.S.A. S.R.L. Via Francesco Petrarca. 4 20123 Milan Italy info@fullspeedahead.com