4", 3-7/8", 4-1/2", 4-3/8", 4-1/4"
21 mm, 5.5 mm, 55 mm, 14 mm, 26 mm
Whitworth, Imperial, SAE, Metric, SAE/Metric
Aluminium Bronze, Chrome Vanadium Steel, Beryllium Copper, Drop Forged Carbon Steel, Alloy Steel
Chrome, Satin, Mirror, Full Polish, Black Chrome
DIN3113, ASME B107.6
BS192:1982., ASME B107.100-2010, ASME B107.6., DIN 3113.