Product Details Description Specification Videos CHARACTERISTICS Easily drills into difficult-to-cut materials such as porcelain tile. Excellent durability. Automatic water supply to the cutting edge (with a built-in water tank) *Enabled when the revolution per minutes (RPM) of the electric drill is 1000 to 3000 rpm. No water is supplied when the RPM is other than above range. Usable with impact drivers, which allow cordless and easy operation. Individually replaceable cutter delivers cost saving. APPLICATIONS Porcelain tile and Ceramic tile. Granite and Marble. Cutter diameter : 5/32" to 3/8" (4.0 to 10.0mm) Max.drilling depth : 1-3/8" (35mm) Shank size : 1/4" hexagonal shank (6.35mm) (DIN3126,ISO1173 style E6.3) Optimum rotation : 1000-3000 r.p.m (double insulated,in the rotary-only mode)