Professional grade 72 tooth gear to gear ratchet with quick release function.Chrome plated Chrome Vanadium sockets.Set exceeds ANSI standards.Positive drive secures fastener on flat for better grip. - Set Contents:Gear to gear ratchet.50 & 150mm extension bars.150mm flex handle.11 piece � Metric 6pt. Sockets: 4,5,6,7,8,9,10,11,12,13,14mm9 piece � AF 6pt. Sockets: 3/16?, 7/32?, 1/4?, 9/32?, 5/16?, 11/32?, 3/8?, 7/16?, 1/2?Heavy duty plastic case with metal clip.