[DETAIL] Specfications: 100% Brand New And High Quality Material: rubber Color: as picture Size: A: The outer diameter is 1.8cm and the inner diameter is 1.2cm B: The outer diameter is 2.5cm and the inner diameter is 1.5cm Conversion:1inch=2.54cm,? 1cm=0.394inches Warm Tip : 1.Please be reminded that due lighting effects, monitor's brightness/contrast settings etc, there could be some slight differences in the colour tone of the website's photo and the actual item. 2.Item Measure by hand, it could be 1-2cm different,your kind understanding will be much appreciated. Package Content: 10 PCs [ATTRIBUTES] - Material: Rubber - Hign-concerned Chemical: None - Thickness(mm): 0.3cm - Material: Rubber - Hign-concerned Chemical: None - Thickness(mm): 0.3cm - Model Number: 10 - DIY Supplies: Woodworking - Origin: Mainland China