The Megapro 151YW/RD-PLR-C 15-in-1 Steel Hex Multi-Bit Authentic Double-End PL Robertson Screwdriver has created a special double-end bit for Megapro. These bits are designed to be compatible with most Megapro drivers. All authentic Robertson tips are manufactured from a specially modified tool steel and carefully heat treated to provide maximum wear and torque. Color coded for easy bit size identification. Two heads are better than one. Double your performance with 2 operative tips on each bit. Original Robertson tip design offers superior "cling" when used with quality square drive fasteners. It has an alloy steel shaft. It makes it easy to find, change and store bits. The palm saver cap does not turn as you push on the cap and turn the handle to drive screws. You won't receive blisters in the palm of your hand. The EZ guide collar helps maintain full contact between the bit and the screw for easier screw driving. It provides greater control. It has a 1-3/8-inch diameter and an 11-1/2-inch extended length. The following bit load is included with this driver: Phillips bit 0-1, 2-3. Square bit 0-0, 1-1, 2-2, 3-3. Star bit 10-15, 20-25. Slotted bit 4-6.