h2RS PRO 18 piece L Shape Imperial Hex Key Set, 0.028 rarr 9/64in/h2 h3strongKey Sizes/strong. . bull 0.028 in. bull 0.035 in. bull 0.05 in. bull 1/16 in. bull 1/2 in. bull 1/4 in. bull 1/8 in. bull 3/16 in. bull 3/32 in. bull 3/8 in. bull 5/16 in. bull 5/32 in. bull 5/64 in. bull 5/8 in. bull 7/32 in. bull 7/64 in. bull 9/16 in. bull 9/64 in. . strongFeatures and Benefits/strong. . bull 18x allen keys included. bull Tools conveniently stored in a compact and robust metal storage box. bull Imperial sizes for every-day applications. bull Keys manufactured from 8650 chrome nickel alloy steel. bull ANSI B18middot3 amp US FED SPEC GGG-K-275D standards/h3 h3/h3