The RT800 WP drill is available in 3xD, 5xD, 7xD coolant fed holder styles in diameter ranging from 16.0 mm to 40.5 mm. The holder is a side lock design that allows for quick change cycles. The bright finished insert is designed specifically for aluminum. The TiN coated design is excellent for mild steel while the FIREX® insert provides the ultimate heat and abrasion resistance.