1.Collet
We use H65 Good Quality brass material ,good quality product need good material!
2.Spring.
Our spring use stainless steel, this steel import form Europe, it have good elasticity, and monment of focus also excelent. the collet we have brass colour and chromeplated.
3.Useable range
Our product manin use all kinds of instrument,such as pressure meter,speedometer,timer and so on!
4.Packing.
We use plastic disc packing it, 50pcs in a disc, 10 disc in a box. 20 PCSbox in a carton.