Specifications: Product name: Rotary Hammer Adapter with Impact Drill Bits Set Interface: Standard square-shank four-slot Material: High-strength steel with heat treatment Included Accessories: Matching leather rings and pins Compatibility: Fits electric wrenches and rotary hammers Features: Anti-corrosion, rust-resistant, rugged construction Adapter Size: 2.4 cm (0.95 in) diameter x 6.4 cm (2.52 in) length Drill Bit Sizes: 0.6 cm (0.24 in) 0.8 cm (0.32 in) 1.0 cm (0.39 in) 1.2 cm (0.47 in) Packing List: 1PC/5/10/15 PCS * Electric Wrench to Hammer Adapter(1SET/5PCS) Service description: If you encounter any questions during the use of this product after purchasing, please feel free to contact us, and we will give you a satisfactory response within 24 hours. Versatile Drilling Solution: Upgrade your toolkit with our Rotary Hammer Adapter with Impact Drill Bits Set, designed to transform your electric wrench into a powerful electric hammer for various drilling tasks Robust and Durable Construction: Crafted from premium materials, this hammer drill adapter features integral heat treatment, ensuring long-lasting strength and durability for all your heavy-duty projects Precision Fit and Easy Installation: The standard square-shank design includes a secure four-slot interface, allowing for quick attachment of the included impact drill bits, making it an efficient electric hammer to drill converter for both DIY enthusiasts and professionals Multipurpose Use for Different Materials: Ideal for drilling into wood, concrete, stone, and more, this rotary hammer adapter expands your project capabilities, making it an essential addition to your toolbox Enhanced Tool Efficiency: Featuring a quick lock self-locking function, our Air Hammers Socket adapter ensures safe transitions between tools, while its innovative design maximizes productivity by securing drill bits effortlessly in just three steps