Description: Ideal screwdriver kit for RC helicopter models. Better flexibility and durability than normal screwdriver bit. Removable screwdriver lid for you to store screws. Application: Model Building Tool Bits: H1.5/H2.0/H2.5/H3.0 Specification: Material: Aluminum, Carbon Steel Color: Blue, Yellow, Gold, Sliver Size Chart: Screwdriver Length: 16.6cm/6.54 inch Package Includes: 4 Pieces Screwdrivers Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2mm error in size