HSS 1/4-7/8 Inch High Speed Steel Step Drill bits, Doubles Flutes Unibit for Hole Drilling in Iron, Copper, Aluminum, Wood, Plastic
HSS 1/4-7/8 Inch High Speed Steel Step Drill bits, Doubles Flutes Unibit for Hole Drilling in Iron, Copper, Aluminum, Wood, Plastic — additional view 2HSS 1/4-7/8 Inch High Speed Steel Step Drill bits, Doubles Flutes Unibit for Hole Drilling in Iron, Copper, Aluminum, Wood, Plastic — additional view 3HSS 1/4-7/8 Inch High Speed Steel Step Drill bits, Doubles Flutes Unibit for Hole Drilling in Iron, Copper, Aluminum, Wood, Plastic — additional view 4

HSS 1/4-7/8 Inch High Speed Steel Step Drill bits, Doubles Flutes Unibit for Hole Drilling in Iron, Copper, Aluminum, Wood, Plastic

Jerax tools

Specifications
MaterialHigh Speed Steel (HSS)
Cutting Diameter0.88 inches
Finish TypeBlack Oxide
Shank TypeStraight
Cutting Angle String118 degrees
Brand NameJerax tools
Set Name12-Piece
Unit Count1 Count
Number of Packs1
ManufacturerJerax tools
Part NumberJTSDB203
Number of Pieces12
Minimum Bore Diameter0.19 inches
Material TypeHigh Speed Steel (HSS)
Finish TypesBlack Oxide
Surface RecommendationIron, Plastic, Stainless Steel, Wood
Tool Flute TypeStraight
Point StyleSplit Point
Number of Flutes2
Product details
  • [Made of High Speed Steel]: Premium material and surface treatment ensures the durability and sharpness. This unibit can drill holes on Iron, Aluminum, Copper, Plastic, Wood, or anything that has similar or lower hardness as these materials.
  • [No Pilot Hole Required] Self-starting & non-walking spilt point tip design helps you start drilling quickly. [Non-stop]: Our Polished Steps and Size Highlights let you able to see target hole size during drilling. No need to stop in the middle of the drilling and check. Save you time and hassle.
  • [Non-stop]: Our Polished Steps and Size Highlights let you able to see target hole size during drilling. No need to stop in the middle of the drilling and check. Save you time and hassle.
  • [Multi Hole Sizes]: This step bit comes with 12 marked sizes so you can drill 12 different hole sizes, saving you time and effort to change bits. Marked sizes including: 3/16", 1/4",5/16",3/8", 7/16",1/2",9/16",5/8",11/16",3/4",13/16",7/8"
  • [Know More About Us]Jearx tools is a professional step bits manufacturer and all our step drill bits are all made of HSS. We also provide the high grade & top grade step bits for stainless steel & other thick material. Visit our store to know more tools!
About this item

  • Yes. The 7/8" step fits 1/2" conduit, the 1-1/8" step fits 3/4" conduit, and the 1-3/8" step fits 1" conduit, so it works well for electrical boxes and panels.

  • Use low to medium speed, and go slower as the hole gets larger and the material gets harder. Aluminum and wood can take higher speeds; stainless steel needs the lowest speed.

  • No. The split point tip starts the hole on its own and won’t walk on flat surfaces.

  • The 3/8" tri-flat shank fits any drill with a 3-jaw chuck of 3/8" capacity or larger. It does not fit 1/4" hex impact drivers directly, and we don’t recommend using impact tools, as the impact force can chip the cutting edges.

  • The 3/8" tri-flat shank is made to be clamped in a 3-jaw drill chuck, so it won’t fit standard sockets. To add reach, use a 1/4" hex keyless chuck adapter with 3/8" (10mm) capacity together with a 1/4" hex extension bar.