HIGH QUALITY MATERIALS: The Hex Socket Screw Drivers Wrench handles are made of high quality aluminum alloy, well processed by precision CNC will provide long service time. 4 DIFFERENT SIZE: This set of tools contains 4 hex socket screw drivers wrench in different sizes of 4.0mm(M2), 5.5mm(M3), 7.0mm(M4), 8.0mm(M5) that meet your need. ATTRACTIVE & DURABLE: High speed steel driver sockets have brushed finishing surface and have resistant to rust strong head which are more durable than common bits. LIGHTWEIGHT & COMFORTABLE: Handle is lightweight and ensures a comfortable used. Hexagon nut can be widely used for repairing or assembling and removed for daily Making manual and RC Models Airplane Quadcopter FPV drones,HSP Tamiya Yokomo 3racing Traxxas cars This is a High Cost-Effective set tools,the handle of hex socket screw drivers wrench is comfortable to hold. it make us easily to adjust screw rod, lock nut. A set include 4 different sizes hex socket screw drivers wrench will meet your basic need. color: black Material: Aluminum alloy, HSS Surface Finishing: Brushed finish Nut Driver Weight: 213g(approx.) Package List: 4pcs x Hex Socket Screw Drivers Wrench 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.