3-3/4", 4-1/4", 3-7/8", 4-1/2", 4-3/8"
30 mm, 21 mm, 5.5 mm, 55 mm, 26 mm
Imperial, Metric, Whitworth, SAE, SAE/Metric
Beryllium Copper, Chrome Vanadium Steel, Drop Forged Carbon Steel, Aluminium Bronze, Alloy Steel
Chrome, Black Oxide, Mirror, Full Polish, Black Chrome
DIN 3113., BS192:1982.
DIN 3113, DIN 3113B, DIN3113, ASME B107.6
BS192:1982.