254/256 and 284/288 Frame Size - Common with WPI Yes - Coupling Kit Cat No. Y8623 192B9950EW-G02192B9950EW-G01 - BX 1.251 - Depth 0.125 - EW 0.250 - XG 2.435 - BY 1/4-20 UNC - BZ 1.750 - XM 0.438
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