Drill America SDS7818 7/8" x 18" SDS-Plus Hammer Bit

SDS-Plus Hammer Bit for Concrete

The Drill America SDS7818 is a carbide-tipped drill bit built for SDS-Plus rotary hammers. It targets professionals and serious DIYers who need reliable holes in stone or concrete. The 18-inch overall length suits deep drilling tasks in masonry walls or floors. Buyers who need a smooth shank for standard three-jaw chucks cannot use this bit.

SDS-Plus Interface Limits

The SDS-Plus shank locks only into SDS-Plus chucks and will not fit SDS-Max or standard round-shank drills. Carbide tips resist wear in hard aggregate but can chip if the bit wanders or strikes rebar. The 18-inch length reduces leverage control in overhead work. California Proposition 65 warnings note chemicals linked to cancer and reproductive harm.

Installation and Common Issues

Insert the shank until it clicks; the tool holds it without a chuck key. Start the hole at low speed to centre the tip, then apply steady pressure. Forcing the bit overheats the carbide and risks tip loss. Dust buildup in deep holes slows progress — withdraw frequently to clear debris.