http://uk.rs-online.com/web/search/searchBrowseAction.html?method=retrieveTfg&binCoun t=28&Ne=4294957561&N=4294962569+4294955435http://uk.rs-online.com/web/search/s...retrieveTfg&bi nCount=28&Ne=4294957561&N=4294962569+4294955435

Hope that link works. If not its for RS components. HPC gears also have the belt. Both are relatively expensive. Not sure if anything cheaper is available.