FEATURES: Faster drilling – up to 4 times faster than standard HSS-R drill bits. Increased durability – up to 50% stronger than standard HSS-R drill bits. Cleaner, accurate, burr-free holes due to recessed cutting wings. Permanent size markings located above shank for increased visibility. APPLICATIONS: For portable drilling of steel, alloyed and non-alloyed up to 900N/mm?, and for drilling a sheet or thin materials.