*KeyFeatures *High Compatibility: This set includes a 1-1/2-inch diameter core drill bit, three adapters, and one pilot drill, making it compatible with most standard drills and hammer drills. Combine versatility and convenience for various tasks *Precise Positioning: Our diamond dry coring bit comes with a pilot drill, no need for pre-drilling. The sharp tip quickly penetrates the surface, allowing for faster and more accurate positioning, ensuring smooth operation without switching modes *Durable & Sturdy: Crafted from quality carbon steel with high-precision welding, this concrete core drill bit boasts 95HRB hardness. It resists heat buildup during high-speed drilling or dry operations, avoiding blade detachment and enhancing longevity *High-Performance Drilling: Our core bits for concrete features precision-ground teeth for smooth, burr-free edges and faster, accurate cuts. The tooth center aligns with the installation axis, resisting wobbling or shifting during high-speed rotation *Wide Application: Ideal for drilling through reinforced concrete, red brick, concrete, and foam brick. This core bit is commonly used in air conditioning installations, plumbing, stair railings, highways, airports, and various constructions ******************************************************************************************************* *Specifications Item Model Number: dry drill 38*240 M16 internal thread Diameter: 1-1/2 in/38 mm Inner Thread: M16 Max Drilling Depth: 9-1/2 in/241 mm Welding Method: Laser Welding Wet/Dry Application: Dry Compatible Machines: Hammer Drills, Drills Compatible Cutting Materials: Reinforced Concrete, Red Bricks, Concrete ,Foam Bricks Net Weight (Including Accessories): 2.64 lb/1.20 kg Product Dimensions: 10.94 x 1.50 x 1.50 in/278 x 38 x 38 mm ******************************************************************************************************* *Pakcage Content 1 x Core Drill Bit 1 x SDS Plus to M16 Adapter 1 x SDS Max to M16 Adapter 1 x 1/2" Hex to M16 Drill Adapter 1 x Pilot Drill 1 x Hex Wrench 1 x User Manual 1 x Label