4", 4-3/8", 3-7/8", 4-1/2", 4-1/4"
5.5 mm, 21 mm, 22 mm, 55 mm, 19 mm
Imperial, Whitworth, Metric, SAE, SAE/Metric
Beryllium Copper, Drop Forged Carbon Steel, Aluminium Bronze, Chrome Vanadium Steel, Alloy Steel
Chrome, Satin, Mirror, Full Polish, Black Chrome
DIN3113, ASME B107.6., ASME B107.6
BS192:1982., BS192:1982.
DIN 3113, DIN 3113B