Efficient Semi-Automatic Design: Our semi-automatic rotary drill features an innovative design, allowing for effortless drilling with a simple up-and-down motion, significantly boosting drilling efficiency and saving precious time. Pairing the black hand drill bit with the blue one ensures smooth, continuous drilling until your desired hole is achieved. Construction: Crafted from sturdy aluminum alloy, both of our pin vise hand drills boast exceptional durability. With a 3-claw chuck and an adjustable clamp ranging from 0.3 to 3.4mm, these drills offer versatility and reliability. Plus, their rotating effortless operation. Versatile Drill Bits: This set includes one black pin vise hand drill, one blue semi-automatic rotary drill bit, and 25 Micro-type twist drill bits ranging from 0.5 to 3mm. With a total of 27 pieces, you'll have more than enough tools to tackle crafting projects and DIY tasks with ease. Replaceable and Multi-Purpose: The semi-automatic hand drill comes with an array of Micro-type drill bits in different sizes, providing flexibility to choose the perfect one for drilling holes of dimensions. Ideal for working with wood, plastic, rubber, PVC, walnut, models, bone, and more, these drill bits versatility and in every project. 27-Piece Pin Vise Hand Drill Set with Semi-Automatic Spiral Hand Drill Rotary Tool and 25 Micro-type Twist Drill Bits (0.5-3mm) for Resin, Polymer Clay, DIY Jewelry, and Electronics Crafting Colour:As shown Material:Metal Package Contents: 27 * Pin Vise Hand Drill Set 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.