3-In-1 Unibody Design This hexagon wrench adopts an integrated design and integrates three sizes of 4/5/6 hexagon wrenches, which only weigh 83g/0.02lb, more convenient to be carried High Strength Alloy Steel The Allen hex wrench adopted the American No. 1045 AISI/SAE Standard Steel, which is harder than other hex wrenches. With this material, it's hard to deform under using Minimal Product Volume The unibody adopted on the Allen hex wrench gifted it with smaller volume, whose longest side is only 5.1inches. With this feature, you can take it with you everywhere HIGH STRENGTH ALLOY MATERIAL: The 3in1 Allen hex wrench is made of American No. 1045 AISI/SAE Standard Steel, which gifted it with high strength quality. The surface of the wrench is chrome-plated, which makes it more durable and anti-rust Y-SHAPED ENGINEERING DESIGN: The hex wrench is designed according to human’s palm structure, so it can fits the palm better. It’s more comfortable when using the wrench. The design also makes the whole installation and removal process more easy and quick SMALLER PRODUCT VOLUME: Thanks to the three-in-one design, this hex wrench is more compact, with an overall diameter of only about 12.7cm/5in, so it can be easily carried in the car without consuming too much storage space PVC FROSTED MATERIAL: We also adopt the PVC material not only the high strength steel to ensure the using comfort. And the frosted design also gifted it with well anti-slip performance. In this condition, you will not feel tired while using 3-IN-1 UNIBODY DESIGN: This hexagon wrench integrates three sizes of 4/5/6mm(7/64’’,8/1’’,9/64’’), which can meet the size of most bicycle socket screws. You only need to carry a hex wrench assembly to meet the maintenance needs in daily riding, saving you more trouble