Description:

1. 5-1. 7mm(cut diameter):Cut Length:18mm/Overall Length:40mm 1. 8-1. 9mm:Cut Length:22mm/Overall Length:46mm 2-2. 1mm:Cut Length:24mm/Overall Length:49mm 2. 2-2. 3mm:Cut Length:27mm/Overall Length:53mm 2. 4-2. 7mm:Cut Length:30mm/Overall Length:53mm 2. 8-3. 0mm:Cut Length:33mm/Overall Length:61mm 3. 1-3. 3mm:Cut Length:36mm/Overall Length:65mm 3. 4-3. 7mm:Cut Length:39mm/Overall Length:70mm 3. 8-4. 2mm:Cut Length:43mm/Overall Length:75mm 4. 3-4. 7mm:Cut Length:47mm/Overall Length:80mm 4. 8-5. 3mm:Cut Length:52mm/Overall Length:86mm 5. 4-6mm:Cut Length:57mm/Overall Length:93mm 6. 1-6. 7mm:Cut Length:63mm/Overall Length:101mm 6. 8-7. 5mm:Cut Length:69mm/Overall Length:109mm 7. 6-8. 5mm:Cut Length:75mm/Overall Length:117mm 8. 6-9mm:Cut Length:81mm/Overall Length:125mm Features: Nitride coated HSS Twist drill bit,more long lasting. Suitable for Iron,Copper,Stainless steel, Zinc alloy,mould steel,and Aluminum alloy. Nitride coating reduces friction and increases life expectancy Package: 1 pack of 10 pieces per sizes Size markings are located above the shank to prevent wearing away.