APACHE200 3/4 In. carbide drill technology was developed to allow for speed installations of the patented WingIt fastening system. APACHE200 industrial carbide drill bits are rated at 200 holes in ceramic wall tile Install our curved shower rods, oval curved rods and structural bath accessories with our patented WingIt fastening technology Use cordless drill at low speed for best results Unlike hole saws, APACHE technology is fast cutting, long lasting and does not require debris removal.