Feature: *High insulation pump piston rings supports high temperature resistance and fatigue resistance *Not easy to wear the contact object, air pump piston ring's service life is long. *Wear resistance piston ring keeps impact resistance with low noise, easy to use in the practical life. *Made of rubber material, cylinder liner rubber ring's quality is guaranteed, you can use it with confidence. *Light and practical, there are 10pcs rubber piston ring to meet your replacement needs. Specification: *Item Type: Rubber piston ring *Material: Rubber *Size: Approx. 48 x 68 x 1.0 mm *For air compressor 1100W,cylinder inner diameter of 63.7mm Package Contents: 10 x Pump Piston Rings Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.