3-3/4", 4", 3-7/8", 4-1/2", 4-1/4"
5.5 mm, 21 mm, 55 mm, 19 mm, 8 mm
Whitworth, Imperial, SAE, Metric, SAE/Metric
Aluminium Bronze, Beryllium Copper, Drop Forged Carbon Steel, Chrome Vanadium Steel, Alloy Steel
Chrome, Black Oxide, Mirror, Full Polish, Black Chrome
DIN 3113., BS192:1982.
DIN 3113, ASME B107.6
BS192:1982., DIN3113, DIN 3113B