1.Use the NSK bearings 2.Insulated pastern 3.Screw fastening 4.Max Driling Diameter:26mm 5.Rated Input Power:600W 26mm Rotary Hammer, impact drill 600W,26mm rotary drill hammer Certificate: Certificate of CCC ISO9001 certificate Delivery Time: We are manufacturer we have enough goods carried in stock,so we can offer the goods you want in a short time(Generally 10~30days after payment). Discount: ...