Cheap And Discounts HTD3M 1:3 Ratio Timing Pulley Belt Kit 3M 20T 60T 16mm Belt Width Reduction 1:3 Gear Belt Pulley Set 3M-324 Transmission Belt Wholesale. Buy Directly From Merchant Sumray Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.