CLARKE | Taper Shank Drill Bit 21mm, Overall Length 243mm, 1pc per Box | DB21TSCLClarke Taper Shank Drill Bits have Bright finish 118 angle Morse taper shank drill bits for all metals like ferrous, non ferrous, and alloys up to a tensile strength of 900 N mm2. Our High Speed Steel twist drill bits are manufactured under DIN standards. Bright finish 118 angle Morse taper shank drill bits. Up to a tensile strength of 900 N mm2. All metals like ferrous, non ferrous, and alloys. Twist drill bits are manufactured under DIN standards..