This Rotary Hammer Adapter with Impact Drill Bits Set converts your wrench into a high-torque hammer drill, using a heat-treated alloy steel core and 0.24-0.47 in bits to cut through concrete and brick with Built from integral-treated alloy steel that resists deformation after thousands of impact cycles, this adapter maintains torque output and durability when tackling stone, masonry, and dense building materials The reinforced square-shank converter locks into most electric wrenches with a four-slot interface and dual retaining rings, ensuring a -stable attachment for cleaner drilling on demanding tasks A fast-lock mechanism lets you switch from wrench to hammer-drill mode within seconds, giving you stronger torque transfer for faster hole-making during repairs, installations, and work This portable conversion set expands tool capability by enabling drilling across wood, stone, brick, and concrete, making it a compact accessory for construction crews, DIY upgrades, and daily maintenance, Weight: 0.110231131 pounds, Manufacturer: Gishbjka