Description:
PP plastic (also known as polypropylene) is a multi-purpose plastic that has established its reputation as engineering plastic.
Bearing balls are used for drawer slides, precision bearings, pumps and valves, check valves, flow meters, and measuring equipment that operate in harsh environments.
PP bearing balls are especially useful for cosmetic bottles, low load bearings, special valves, check valves, floating valves, fluid meters, carburetors, flow meters, and laboratory equipment.
Suitable for a variety of purposes, some of the most common things are shown below.
3.1mm commonly used for clusters and older British earphones.
6.3mm is usually used for rear wheel and bottom stays.
The front wheel usually uses 4.7mm.
4.0mm usually used to hold headphones that push the cup.
Specifications:
Size: 8mm
Tolerance: +/- 0.02mm
Material: PP (polypropylene)
Package included: 20pcs