Hand Drill Set includes 2 piece Precision Pin Vise and 50 pieces different sizes Mini Twist Drill Bits,which are Perfect for the Materials of Wood,Resin,Jewelry,Walnut,Amber,Beeswax,Olive Nut,Beads,PVC,Acrylic and Plastic,etc.This Hand Drill Tool is very Useful for Precise Drilling,Electronic Assembling,Tool Making,Model Making,Jewelry Engraving. The Aluminum Alloy Precision Pin Vise has a 3 Jaw Hardened Steel Chuck.It can grip the Drill Bits of size 0.2-3.4 mm(1/64-9/64 inches)tightly.The Drill Bits Not Skid and Not Falling Off although after many uses.The Hand Pin Vise is equipped with a grooved grip and ball bearing mounted swivel top,can Promote Speed and Precision when you rotating the Pin Vise. Notice that the Hand Drill Pin Vise is a Manual Tool,NOT a Power Tool.The Twist Drill Bits can't be applied to Hard Material like Steel,Iron,Stone,Glass etc.The Pin Vise should grip about 1/2 Length of the Twist Drill Bit when using the Hand Drill.So that the Drill Bits not easily to be broken. Color: silver +black material: metal Dimensions Hand drill length: 95mm Clamping range: 0.5-3.4 mm Drill size: 0.5 / 0.6mm(10pcs/each size);1.0 mm (6pcs);1.2/1.5/1.8/2.0/2.35/3.0 mm(4pcs/each size) Package Contents: 2 x hand drill 48 x twist drill 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.