Size selection: Silicone material is elastic, and it is recommended to choose silicone end caps that are slightly smaller than the outer diameter of the product. 100pcs Rubber End Caps 3mm (Inner Dia) PVC Rubber Round Tube Bolt Cap Plastic End Cap Cover Thread Protectors Black, Lenth is 15 mm Silicone thread protectors have good high and low temperature resistance and corrosion resistance, and the service life of silicone is about three times that of ordinary rubber. Wide application: Thread protectors of various sizes and sufficient quantities are available to meet more needs; silicone thread protectors can be cut into suitable lengths for easy use. Snapklik.co : Jaiikury 60PCS Screw Thread Protectors 3 ID Rubber End Caps Vinyl Flexible End... Good protection: The flexible end caps of silicone are very suitable for preventing floor wear and tear, and can be used as covers for bolts, metal chair tips, patio furniture, table legs or table tips, bar stools, or any round tubes. Radiator End Caps CQRobot 100Pcs 1/8 Inch Flexible Silicone End Caps Round Bolt Bolt Covers 12/25 inch: diameter: 12/25 inch (12mm); length: 0., 51 inch (13mm); color: White Translucent. It is very simple to cut the silicone thread protector to the appropriate length as needed.