Best Carbide - SG5NFL6 1/2" Aluminium Cut Long Series Carbide Burr Insize Outside Micrometer 0-1" Range Series 3207-1 Water pressure loosens and flushes High speed steel HSS 3208-100B Insize Limit Micrometer 25-50mm Range Series 3235-50mm

Water pressure loosens and flushes the obstruction down the drain

Straight Shank – Ensures compatibility with standard drill chucks and collets

The Green Drain Waterless Trap Seal 3

Compatible with all Carmex 16 mm external threading inserts—including Metric

Key Advantage: Superior insert stability under heavy loads and interrupted cuts due to robust top-clamp system

Best Carbide SG5NFL6 1 2" Aluminium Cut Long Series Carbide Burr Insize Outside Micrometer 0 1" Range Series 3207 1 Water pressure loosens and flushes High speed steel HSS 3208 100B Insize Limit Micrometer 25 50mm Range Series 3235 50mm Water pressure loosens and flushes the obstruction down the drain Straight Shank – Ensures compatibility with standard drill chucks and collets