Description: Reliable: Each edge of the screwdriver bit can lock the screw tightly and it is not easy to damage the screw or drill bit, you can use it without worries because it works with a high precision. Reusable: The screwdriver bit is made of alloy steel material, anti-abrasion and sturdy, you can use it for a long time because it is not easy to be broken or damaged. Compatibility: The drilling bit is suitable for hand screwdriver, electric screwdriver and other hex-shank electric drills, replacing the old or damaged one perfectly. Safety: This screwdriver bit is anti-slip and stable, you can unscrew or tighten the screw without worrying about slipping or falling off, not easy to make trouble for you. Portable: This kind of screwdriver drill bit is small and lightweight, it will not occupy so much space when carrying or storing, you can order without worries. Specification: Material: alloy steel. Color: green. Size: approx. 25mm/0.98inch. Approx. 50mm/1.97inch. Approx. 65mm/2.56inch. Approx. 70mm/2.76inch. Approx. 90mm/3.54inch. Approx. 150mm/5.91inch. Type 3: 25/50/65/70/90/150mm 6PCS. Note: Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow a slight deviation for the measurement data and make sure you do not mind before ordering. Package Includes: Type 1: 5 Pieces Screwdriver Drill Bits. Type 2: 2 Pieces Screwdriver Drill Bits. Type 3: 6 Pieces Screwdriver Drill Bits. Type 4: 4 Pieces Screwdriver Drill Bits. Type 5: 3 Pieces Screwdriver Drill Bits.