• Model NO.：SED-SD9-AS
• Dia Size：4mm-20mm
• Production Art：Fully Ground or Forged
• Min Quantity：200sets
• Packaging：Plastic Box,Metal Box
• Surface Finish：Amber
• Transport Package：PVC Bag, Blister Card, Plastic Box, Metal Box etc
• Specification：ISO9001, SGS, CE
• Trademark：EASYDRILL
• Origin：China
• HS Code：820750900
• Production Capacity：200, 000PCS,Month

Procuct Name

9Pcs Tri Flat Shank Straight Flute Amber Color HSS Step Drill Bit Set

for Multiple Hole Tube Sheet Drilling in Aluminum Case

Size

1/8-1/2", 1/8-7/8", 3/16-1/2", 3/16-7/8",  1/4-3/4",

1/4-1 3/8", 7/16-1 1/8", 9/16-1", 1 3/16-1 3/8"

MaterialHSS    (Cobalt M35 is Available)Flute TypeStraight Flute   (Spiral Flute is Available)Flute NumberTwo Flutes   (Single Flute, Three Flutes are Available)Shank Tri Flat Shank   (Quick Change Hex Shank, Round Shank, Double R Shank are Available)Surface FinishAmber   (TiN, Bright, Co-coated, Black Oxide, Black & Bright, TiAIN are Available)Package9Pcs in Aluminum CaseFeatures

1. Step drill bits are perfect for drilling and enlarging multiple-holes in thin sections of sheet metals, pipes, plexiglass, plastics, wood up to a thickness of 5mm.

2. 135° Split Point Tip: increases cutting speed with self-centering and the drills do not run off center.

3. A variety of hole diameters can be drilled using only one tool. 

4. The dimension of drilled hole is exact. 

5. Two Flute Design: provides longer life and better chip removal.

6. Only for rotary use.