Features： 1、Simpler Works: Adopting 3 jaw chuck with 0.3‑3.4mm adjustable range and rotatable tail, the operation is very easy. 2、Various Sizes: Including 24pcs twist drill bit in various sizes, which will satisfy your different working needs. 3、Broad Utility: Can be widely applied for electronic assembly, tooling, model making, winding, home decoration, etc. 4、Good Material: Mainly made of high quality aluminium alloy material, very sturdy and durable for long term using. 5、Easy to Carry: Mini size takes up little space, while the light weight adds more convenience to the daily carrying. Specification： Item Type: Hand Twist Drill Product Material: Aluminium Alloy Twist Drill Bit Specifications: Approx. 0.8mm / 0.03in 0.9mm / 0.035in 1.0mm / 0.04in 1.1mm / 0.043in 1.2mm / 0.047in 1.3mm / 0.051in 1.4mm / 0.055in 1.5mm / 0.059in 1.6mm / 0.06in 1.8mm / 0.07in 2.0mm / 0.08in 2.2mm / 0.09in 2.5mm / 0.1in 2.8mm / 0.11in 3.0mm / 0.12in Hand Twist Drill Chuck Adjustable Range: Approx. 0.3 ~ 3.4mm / 0.01 ~ 0.13in Application: Suitable for electronic assembly, tooling, model making, winding, home decoration, etc. Package List： 1 x Hand Twist Drill 24 x Twist Drill Bit 100 x Eye Screw 1 x Key Ring