Cheap And Discounts Perimeter 3231-3321mm HTD3M Timing Belt Width 10-30mm Teeth 1077-1107 White Polyurethane PU With Steel Core For 3D Printer/CNC Wholesale. Buy Directly From Merchant GLNB_Homegarden_Improvement Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.