Specification: Product Name: Damping rubber Hole size about 10.5mm Dimensions ( Length x Height): 25*20mm/0.98x 0.79" 25*25mm/0.98 x 0.98" Net Weight:44g Shore hardne: 30HA/50HA/70HA Color: Black/white/red Material: Rubber Package Included: 2*Damping rubber with height about20mm 1*Damping rubber with height about25mm Note: 1.We provide clear pictures, measurements where poible. Please check as much as poible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) Specification: Product Name: Brake Spring Dimensions : Wire diameter:1.85mm/2.4mm/2.7mm/3.4mm External diameter:20mm Height: 30mm Net Weight:12.5g Color: yellow/blue/green/red Material: Spring Steel Package Included: 1*Brake Spring Note: 1.We provide clear pictures, measurements where poible. Please check as much as poible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm)