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:128 Belt 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:plastic Color:Black How To Select Drive Belt 1.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 Belt Only 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.