Converts your standard drill into a powerful hammer drill for concrete wall and masonry work, for most corded / cordless drills (drill not included Lightweight 100x138mm body enables easy handling for home renovations, furniture assembly, and wall installations while supporting drill / hammer mode switching Delivers strong hammering action to penetrate various materials including concrete, brick, and stone without straining your drill motor Adjustable rotation speed allows customized drilling for different materials, ensuring clean holes and reduced operators fatigue during DIYer or professional use Features a hardened steel transmission shaft and alloy drill bits for long lastingly durability and fast, smooth drilling with minimal breakage risk, Manufacturer: KACCDE