20pcs 3.5mm Inner Diameter Rubber End Caps for Round Vinyl Tubing Bolt Caps Thread Protectors Dark Grey

3.5mm inner diameter. Protection of all kinds of pipe ends: plastic pipe, metal pipe, oil pipe, water pipe, vacuum pipe; thread protection: bolt, screw, nut thread protection. For the protection of shelves, fences, ramps; for the protection of furniture, chairs, dining tables, stools, hammock decoration; for covering, protecting, decorating, sealing (drain hole). Size selection: since the rubber material is soft and elastic, we recommend choosing a rubber tip slightly smaller than the outer diameter of the product to be protected. For example: if the outer diameter of your product is 9.8mm, choose the 9.5mm rubber cover. Rubber material: soft, elastic, precise size, oil resistance, heat resistance, dust resistance, long service life.