Drop forged, heat treated, CR-MO steel w/phosphate finish
Spring loaded swivels help keep socket at the correct angle
Radius corner design contacts only flat surfaces of fastener head to eliminate rounding off corners
METRIC: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 mm.
SAE: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16".
NOTE: COLOR PLASTIC CASE MAY VARY RED OR BLUE