3-3/4", 3-7/8", 4-1/2", 4-3/8", 4-1/4"
21 mm, 55 mm, 19 mm, 26 mm, 15 mm
Whitworth, Imperial, Metric, SAE, SAE/Metric
Chrome Vanadium Steel, Aluminium Bronze, Beryllium Copper, Drop Forged Carbon Steel, Alloy Steel
Chrome, Satin, Mirror, Full Polish, Black Chrome
DIN 3113., DIN3113, ASME B107.6., ASME B107.100-2010, ASME B107.6
BS192:1982.