HTD3M timing belt width 15mm 3M Belt for CNC and Laser Machine HTD 3M Open BeltRubber HTD 3M Open ended Timing Belt W=15mm 3M Belt pulley Engraving Machine CNCHTD 3M Open ended timing belt 3M 15 width 15 mm Rubber with Fiberglass Pitch: 3mm = 0. 12 inch Width: 15mm= 0. 59 inch Length: 1m =39. 37 inch Material: Fiberglass Rubber Length: 1 pcs equal to 1 m (3. 28 foot) The roll is 200m but you can purchase any number of meters that you need