Product Description Dirty sprockets - no problem: the GSC-1 Gearclean Brush by ParkTool The GSC-1 Gearclean brush with crescent-shaped rasp bar reaches the coarsest dirt on the gear rim, rear derailleur, chain and any other part of the bike. In this way, you prevent premature wear and ensure smooth and safe operation of the relevant components. The handy dimensions make it a practical companion on the road. Features:made of flexible, robust nylonreliably removes dirt from numerous places on the bikeManufacturer Number: GSC-1 Contents:1 x Manufacturer: Park Tool Company 1185 Eagle Lake Rd Shoreview MN 55126 USA info@parktool.com Distributor: GROFA Action Sports GmbH Otto-Hahn-Straße 17 65520 Bad Camberg Germany info@grofa.com