Easy to use: the hand drill adopts an adjustable design, which is easy to equip with a 0.3mm-3mm drill bit; The drill rig can be matched with different size drill bits; Simply align the threads and rotate the vise head to tighten; The operation is simple and convenientSufficient pin vise set: you will receive 1 piece of hand drill and 20 pieces of mini twist drill bits in different sizes in this package, 21 pieces in total, quantity sufficient material and a variety of sizes to meet your different needs in daily lifeSturdy material: the pin vise hand drill is mainly made of alloy material which is durable and not easy to rust, the mini twist drill bits are made of high speed steel, durable and not easy to mix up when using, will give you a satisfying life timeDrill set: twist drill bits range from 0.3mm to 1.6mm, include 0 .3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0 .8 mm, 0.85 mm, 0.9 mm, 0.95 mm, 1.0 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm and 1.6 mm, supplied with a plastic box for your storage, you can put them in different inner boxes according to different sizes. them, no need to worry about losingWide range of uses: suitable for drilling small holes of various things, such as resin, plastic, wood, clay, beads , handicrafts, artificial pearls, jewelry, model making, etc., very practical items in daily life