High Strength SDS Plus Square Hole Punch For 86 Type Junction Wall Hole Drill Bit For Brick Stone Cement Wall Concrete Hole Electrician's Tools For Profe Features: Precision Engineering: accurate square holes for 86-type junction . Materials: This heavy-duty hole drill bit set is made of high-quality to provide you with years of service even under heavy use. Work on Various Materials: This drill hole cutter set easily drills through most common wall materials (brick, , concrete, cement, and stone) to let you install tubing, water pipes, exhaust hoses, and more Ergonomic Design: Provides a comfortable grip and hand . Convenient operation while more efficient material removal. tools: Ideal for both and DIY electrical installations, this tool your workflow, making it an indispensable addition to your . Product Description: High Strength SDS Plus Square Hole Punch For 86 Type Junction Wall Hole Drill Bit For Brick Stone Cement Wall Concrete Hole Electrician's Tools For Profe Material: metal Color: as the picture shows, (Due to the difference between different monitors, the picture may have slight color difference. please make sure you do not mind before ordering, Thank you!)