Useful attachment for drilling in confined and awkward spaces. Very popular to drill between joists or roof beams. Fits in virtually any drill, air, electric, cordless etc..... and converts them to a right angle drill. Requires 4-1/2" (115mm) Clearance + length of drill bit to be used. Full metal aluminium casing with metal gears. The drive attachment allows you to drill in tight corners or at awkward angles , perfect for the professional kitchen fitter, joiner or construction worker. The attachment drilling at 90 degree angles is suitable for hand or power drills, including portable electric drills, sanding or buffing attachments. Made of aluminium with a heat treated steel shank for strength and durability. Specifications: -Reversible 1:1 ratio attachment -Heat treated steel shank -Requires 4.5" of clearance -3/8" chuck key -Right and left hand use -Length of head (top of drill) : 105mm, Length of shaft : 154mm -Converts any 3/8" or 1/2" chuck drill into a right angle drill