This Trend set of mini hex key set includes both metric and imperial sizes. The metric hex keys range from 0.7mm to 3mm and the imperial sizes from 0.028 inch to 9/64 inch AF. The keys are made from Chrome Vanadium Steel, providing strength and durability, making them ideal for router cutters, modellers, engineers, automotive, DIY and electronics. Supplied in a handy plastic holder, which is labelled for easy size identification. The HK/SET/A Mini Hex Key Set comprises the following sizes: Metric: 0.7mm, 0.9mm, 1.3mm, 1.5mm, 2.0mm, 2.5mm, 3mm. Imperial: 0.028 inch, 0.035 inch, 3/64 inch, 1/16 inch, 5/64 inch, 3/32 inch, 7/64 inch, 4/32 inch and 9/64 inch. Technical Specs Total weight: 38g.