Quick Exchange- A of alloy chuck for a better experience of simplicity and ease of exchage. This hand drill is designed to fit drill bits with 3.175mm shank only. Two-Way Multifunction Cap-Providing proper protection and your drill bits. May be used as extension when connected to the rear end so that you can adjust to best fit specific job. ANTI-Rolling Design- An embedded magnetic locking system prevents accidental falling off when changing drill bits. Super Value Pack- With 5pcs Steel Drill Bits 0.5/0.8/1.0/1.5/2.0 mm Material: plastic + metal Color: as shown Package Contents: 1 set 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.