25 different size allen keys in a plastic wallet. Both metric and imperial sizes.

• Metric: 1.27, 1.5, 2.0, 2.5, 3.0, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0, 8.0, 10.0mm
• Imperial 3/8, 1/4, 7/32, 3/16, 5/32, 9/64, 1/8, 7/64, 3/32, 5/64, 1/16.
• Bit type : Hex (Allen)
• Bit size : 1.5mm Hex (Allen), 2.0mm Hex (Allen), 2.5mm Hex (Allen), 3.0mm Hex (Allen), 4.0mm Hex (Allen), 5.0mm Hex (Allen), 5.5mm Hex (Allen), 6.0mm Hex (Allen), 8.0mm Hex (Allen), 10mm Hex (Allen)
• Number of tools in set : 25.0pc