Xscorpion HKS-20MU 
 20-Piece Short Arm Metric Allen Hex Key Set 

General Features:

Heavy Duty Short Arm Metric Inch Allen Hex Key Set with Case
Case Holder marking for an easy identification of the dimensions
Keys resist rust and corrosion
Meets or exceeds ANSI standards
10-Piece Size (Metric): 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm 
10-Piece Size (U.S SAE): 1/16, 5/64, 3/32", 1/8", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8"
Package comes in 20 Pieces in carrying case