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• Designed for removing and inserting screws in places where it is impossible to use a straight shank screwdriver.
• Available in two- or four-blade varieties, with one end slotted and one end Phillips
• Some models available with reversible ratcheting mechanism to turn screw tip and magnetized tips to guide screws into holes or otherwise inaccessible areas.
• Others have split-points that can be expanded in width to fill the screw slot and hold screws when guiding into inaccessible areas. A spring clamp that fits over the screw head, holding the bit in the slot, serves a similar purpose.