Specifications:
Material: Rubber
Diameter: about 3.5-8cm/1.3"-3.1" (3.5-4-4.5-5-5.5-6-6.5-7-7.5-8cm)
Folding Length: about 4.5-12cm/1.7"-4.7" (4.5-5.5-6-6.5-7-7.5-8-8.5-9.5-10-10.5-11-12cm)

Package Includes:
56 x Rubber Drive Belts (approximately)

Features:
Made of high quality material.
Easy to use, convenient and fast.
Multi-uses, you can use it to fix the toys,great for diy science and small production, product design and mechanical model.

Notices:
1.Please allow slight size error due to manual measurement.
2.About the color,due to different light,computer screen and batch,there may be some difference between the picture and actual item.