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