Sumind O Ring Keyboard Dampeners - 200 Pieces Silicone Plastic Storage Box

O ring specification: approx. 8 mm/ 0.3 inch outer diameter, approx. 5 mm/ 0.2 inch in inner diameter and 1.5 mm/ 0.06 inch in thickness Flexible and durable: made of silicone material with good elasticity, tough enough and not easy to crack, can serve you a long time Easy to store: these small rubber ring gaskets are packed in a clear plastic box, which measures 7.4 x 5 x 2 cm(LWH), good for organization and portable, no more mess Wide application: little o rings mostly are applied on the bottom of keyboard keys to reduce noise and give the keys a pleasant soft bottom out, also good as sealing rings for oil, dust, water and more Quantity: 200 pieces of rubber rings and 1 storage box; Note: do not put in mouth