Comprehensive Resin drill pen set: This versatile kit includes 15 mini twist drill bits of assorted sizes(0.7x2/0.9x2/1.0x5/1.2x2/1.5x1/2.0x1/2.5x1/3.0x1). It also features 4 grinding heads with a handle diameter of 2.3mm and average length of 32mm. This combination ensures a tool suited for all your DIY crafting needs. Variety of 15 Drill Bits: The 15 different size drill bits in our package are perfect for applications - from resin casting and jewelry making to keychain crafting. Each bit is specifically designed for different types of crafts, ensuring that all your project requirements are easily met. Efficient and Labor-Saving: Our electric handheld drill majorly improves your DIY crafting experience. Unlike manual hand drills, our tool saves time, effort, and enhances precision, thereby offering superior efficiency and high-quality results for your projects. Wide Applications: The mini drill bits are versatile and can penetrate wooden boards, plastic boards, and paper sheets within a thickness of 10mm. Please note, they are not suitable for drilling hard materials such as steel. This wide range of uses makes this tool an essential for all DIY enthusiasts. User-Friendly Operation: Our drill is easy to set up and use. First, align the small circular hole below the clamping nozzle with the space; then, using the included L-shaped key, attach the clamping part. Insert the drill bit into the brass clamp, switch on, and start drilling! Enjoy a seamless, hassle-free DIY crafting experience. The actual product may have slight color differences or differences, which does not affect use. Colour:grey Material:plastic Package Contents: 1 x electric drill 1 x locking nut 6 x sandwich 1 x wrench 15 x drill bits 4 x grinding head 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.