Product description:
- The expansive bit makes it possible to drill a full range of diameter holes with the same bit
- Adjustable using a screwdriver or wrench
- Made of drop-forged tool steel in one piece, heat treated all over. Head and adjustable cutters hardened and tempered
- Locking screw zinc plated with hexagonal head with slot
- Sizes 15 to 45 mm & 22 to 76 mm, both with round shank