"THERMOPLASTIC,BELL SPEC 299-947-508 FSCM 97499; 0.070 IN. NOM THK MATL; U-SHAPE CROSS SECTION; COLOR BLACK NO. 37038,FED STD 595; 6.360 IN. NOM O/A LG,2.200 IN. NOM O/A W; 3 HOLES 0.500 IN. NOM DIA THROUGH 1 ARM ALONG LG,1.811 IN. NOM C TO C DISTANCE BETWEEN HOLES"