Rannb Hole Saw 4-inch Dia Hole Cutting Drill Bit for Drilling Holes in Wood Plastic Drywall Thin Metal

Dimension Cutting Dia: 4"/102mm Cutting Depth : Approx. 25mm / 1" Shank Diameter : 10mm/0.393"(Angle to Angle) Package Content 1 x Hole Saw 1 x Hex Shank 3 x Pilot Drill Bit 1 x Small L Wrench Please Note ?1. Hole saw may become overheated and get damaged or even burned up due to fast rotary friction, we suggest customers to use coolant to keep the hole saw cold during usage. ?2. Please remove the spring on the pilot bit when you are drilling a hole on the materials with over 10mm thick. ?3. Keep the drill be stable when drilling, otherwise the centre bit may get snapped due to excessive shaking. ?4. Start drilling with a slow drill rotary speed, or the centre bit may be shattered on first use. ?5. Please make adequate personal protection well before using the product. ? Welcome to Contact Us ? Your satisfation is our first priority. Rannb aims to provide our customers a happy shopping experience and completed After Sale Service. If you have any question to product, please feel free to contact us.