4-1/4", 4-3/8", 3-7/8", 4-1/2", 5-3/8"
21 mm, 55 mm, 14 mm, 36 mm, 15 mm
Imperial, Whitworth, SAE, Metric, SAE/Metric
Beryllium Copper, Aluminium Bronze, Chrome Vanadium Steel, Drop Forged Carbon Steel, Alloy Steel
Chrome, Satin, Mirror, Full Polish, Black Chrome
DIN 3113B, DIN 3113., ASME B107.6., ASME B107.6
BS192:1982., DIN3113