Description: This product is processed by precision mold using black nitrile rubber material. The appearance is smooth and clean, the hardness of the product is about 70 degrees, and the elasticity is moderate. Good oil resistance, abrasion resistance, aging resistance, suitable for use at temperatures from -20 ° C to 120 ° C. This product is suitable for All GOPRO / yi / SJcam / GitUp and other diving bracket aluminum ball head accessories. This is small type non-slip rubber seals fit for ball head bottom. Specification: Material:Rubber Inner Diameter:18mm Size:25*18*3.5mm Color:Black Package Includes: 10 Pieces Replacement Rubber Seals
