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