We can offer both PU and Rubber double sided timing belt. Teeth type: DMXL,DXL ... Raw Edge Cogged V Belt, Wrapped V Belt, Double V Belt, Narrow V Belt, Ribbed V Belt(PK ... Timing Belt( rubber timing belt, PU timing belt, Double side timing belt, open end timing belt), PU V Belt ... offer some special belt, such as Coated timing belt, Perforated Belt and Extral long endless belts. Double side timing belt