This 14g pincher is made of 316L stainless steel, and has a black PVD coating. Each pincher comes with 2 o-rings. The approximate inside diamters are as follows:
14g - 10g = 1/2"
8g & 6g = 9/16"
4g & 2g = 5/8"
(SOLD INDIVIDUALLY. ORDER TWO FOR A PAIR.)