Concentric Expansion Connectors
Part Number	A=Small ID	B=Large ID	C=Length	D=Angle
51-01	6.00"	8.00"	10.00"	9.5°
57-02	6.00"	10.00"	12.00"	18.8°
57-03	8.00"	10.00"	12.00"	9.5°
57-04	8.00"	12.00"	12.00"	18.8°
57-05	10.00"	12.00"	12.00"	9.5°
57-06	10.00"	14.00"	12.00"	18.8°
57-07	12.00"	14.00"	12.00"	9.5°
57-08	12.00"	16.00"	12.00"	18.8°
57-09	14.00"	16.00"	14.00"	8.2°
57-10	14.00"	18.00"	14.00"	16.0°
57-11	16.00"	18.00"	16.00"	7.2°
57-12	16.00"	20.00"	16.00"	14.2°
*Standard with ANSI, Cat, Cummins, or Detroit Flanges.