Durable,easy to use.Suitable for small surf electric scooter etc.Replacement Drive Belt HTD 384-3M-12.Durable,easy to use.Specification:Teeth number:128Belt length:384mm(about 15.1 inch)Peak Distance Between Two Adjacent Belt Teeth:3mm (about 0.11 inch)Width Of Belt:12mm (about 0.47 inch)Material:plasticColor:BlackHow To Select Drive Belt1.Check The numbers and letters on The Old Belt.2. If you can't find the numbers ane letters printed on belt:a) Measure the length of the belts loop.b) Measure the distance from peak to peak of two adjacent belt teeth.c) Measure the width of the belt.Package:3 x Drive BeltOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.