Set contains Triple Square sizes M5 to M16High quality chro-moly alloy steel.GP High Torque Drive Socket design for increased strength with reduced chance of fastener rounding.Set weight: 1.5 lbs.Lifetime Warranty.Includes the following Sizes - Item Numbers: Size Item No. M5 2105S M6 2106S M8 2108S M10 2110S M12 2112S M14 2114S M16 2116S Grey Pneumatic 1307S 1/2' Drive Triple Square Driver Set - 7-Pc