hexagon socket is used to tighten hexagon screws/nuts. Each hexagon nut screwdriver head is clearly marked, so you can find what you need quickly. This good tool set will meet your expectations. The suit is made of aluminum-steel alloy steel, which is durable and easy to use. Very helpful for assembly and disassembly. Very suitable for impact use and rated impact force. Widely used DIY, auto parts, woodworking, professional machine maintenance, etc. Product name: deepened hexagon socket Product specifications: 5.5mm~14mm Product use: used to tighten hexagon screws/nuts. Scope of use: hand electric drill, rechargeable drill, pneumatic batch, wide range of use, 100% brand-new high quality. Colour:silver Material:steel Package Contents: 10 x Hexagonal sleeve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.