ABOUT JAPCHET: JAPCHET is a professional brand making concrete hole saw and other products. JAPCHET means to send joy and kindness. We’re dedicated to making products with craftsmanship that customers can feel satisfaction and convenience while using them. Strive to bring you products with the best quality and price. You can put in trust in JAPCHET and we promise we won’t let you down. WHY JAPCHET? Our masonry hole saw has high hardness and durability. It’s strong and impact resistant, which can last for years of use. The round SDS Plus connecting rod is suitable for round shank four-pit electric impact drill. Tips: Locate and drill the center hole first to reduce stress on the body. Drill slowly to prevent too much impact on the hole saw and hands. You can get 3 pieces of concrete hole saw drill bit , 1 piece of 70mm diameter hole saw, 1 piece of 220mm SDS Shank connecting rod and 1 fixing screw. Hole saw cutter of SDS plus shank are suitable to use to punch holes on cement wall, brick wall, foam brick and hollow brick and so on for pipe installation. PRODUCT DETAILS: Material: 40CR Steel Color: Silver Diameter: 70 mm / 2.75 inches Drilling Depth: 50 mm / 2 inches Connecting Rod: 220 mm / 8.67 inches PACKAGE LIST: 1 x 70 mm Concrete Hole Saw 3 x Hole Saw Drill Bit 1 x 220mm SDS Shank Connecting Rod 1 x Hex Bolt