"BLACK ABS THERMOPLASTIC MATL, 0.296 IN. OD BODY, 0.202 IN. INSIDE ACROSS FLATS, 0.281 IN. LG O/A, 3 EXTERNAL GUIDE RIBS 0.035 IN. H, 0.037 IN. W AND 0.262 IN. LG. SPACED 120 DEG. APART, 0.366 IN. DIA O/A, 45 DEG CHAMFER 0.010 IN. W EXTENDED TO 0.010 IN. W RIM ON END"