STERLIANG 1/2"-24T 沖6.3MM四角
A.M. STD 1/2"-20T H: 3/8" 沖8MM六角
YOUNGSTOWN 1/2"-20T H:7/16" 沖8MM六角
MILWAUKEE 17/32-27T 沖8MM四角
ELJER 1/2"-27T H: 1 9/32" 沖7MM圓四角
ELJER 9/16"-27T H: 15/16" 沖8.1MM圓四角