Rotary Hammer Drill Bits

Select bits by material and shank type: masonry bits (carbide-tipped) for concrete and brick, SDS or SDS-Plus for most hammer drills, and SDS-Max for heavy-duty demolition; smaller diameters (1/8"–1/2") are for anchors and pilot holes, larger diameters for through-holes

SDS-Plus is a smaller 10 mm-class shank common on light-to-medium rotary hammers, while SDS-Max is larger and designed for higher-impact, heavy-duty tools; they are not interchangeable without a compatible drill chuck or adapter

Match the bit diameter to the anchor or rebar specifications—use the manufacturer-recommended hole diameter and a bit slightly larger than the bolt or anchor core; check required depth and use a depth stop or tape on the bit for consistent results

Durability depends on carbide tip quality, flute design for dust removal, heat treatment of the shank, and correct use (proper RPM, hammer mode). Bits with reinforced carbide tips and spiral flutes typically maintain cutting speed and last longer in abrasive materials

Using rotary hammer bits in a standard drill may not secure the shank properly and can damage the tool; regular twist drill bits can be used in rotary hammers if the shank fits the chuck, but avoid hammer mode with bits not designed for impact

Clean dust from flutes after use, avoid overheating by using correct speed and periodic withdrawals, inspect carbide tips for chipping, and store bits dry in a case or rack to prevent corrosion and preserve alignment

Rotary hammer bits commonly range from budget sets under $50 to higher-end professional bits above $100; spend more for hardened shanks, higher-quality carbide tips, and branded variants if you need frequent heavy-duty use or longer life