Specification9.5mm Inner Dia, 18mm Height(Due to manual measurement, allow a deviation of ±3mm) Widely Application1. All kinds of pipe ends protection: plastic pipe, metal pipe, oil pipe, water pipe, vacuum pipe; 2 Thread protection: bolt, screw, nut thread protection Widely Application3. For shelf, fence, rail protection; 4. For furniture, chair, dining table, stool, hammock decoration protection; 5.For hole cover, protect, decorate, seal (drain hole) Size SelectionBecause rubber material is soft and elastic, we recommend choosing rubber end cap that is slightly smaller than the outer diameter of the product to be protected. For example: the outer diameter of your product is 9.8mm dia, choose the rubber cover of 9.5mm! Rubber MaterialSoft, Elastic, Accurate Size, Oil Resistance, Heat Resistance, Dust Resistance, Long Service Life