φ31.75mm 7/16-24UNF 9/16-18(UNF)
Φ31.75 3/8-24 9/16-18 7/16-24
φ23.81mm 2-M12*1
25.4mm 2-M12*1
33.3mm 9/16-18(UNF) 3/8-24(UNF) 7/16-24(UNF)
φ22.22mm 2-3/8-24
20.64mm M12*1 M10*1 M16*1 M18*1
23.81mm M10*1 M12*1 M16*1 M18*1
φ23.81 2-M10*1