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Home > Step Composite Drills > 4-12mm / 4-20 / 4-32 Triangular Handle Straight groove Step Drill Set 3-piece Step Drill Pagoda Drill
4-12mm / 4-20 / 4-32 Triangular Handle Straight groove Step Drill Set 3-piece Step Drill Pagoda Drill
4-12mm / 4-20 / 4-32 Triangular Handle Straight groove Step Drill Set 3-piece Step Drill Pagoda Drill
4-12mm / 4-20 / 4-32 Triangular Handle Straight groove Step Drill Set 3-piece Step Drill Pagoda Drill
4-12mm / 4-20 / 4-32 Triangular Handle Straight groove Step Drill Set 3-piece Step Drill Pagoda Drill
4-12mm / 4-20 / 4-32 Triangular Handle Straight groove Step Drill Set 3-piece Step Drill Pagoda Drill
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4-12mm / 4-20 / 4-32 Triangular Handle Straight groove Step Drill Set 3-piece Step Drill Pagoda Drill
4-12mm / 4-20 / 4-32 Triangular Handle Straight groove Step Drill Set 3-piece Step Drill Pagoda Drill
4-12mm / 4-20 / 4-32 Triangular Handle Straight groove Step Drill Set 3-piece Step Drill Pagoda Drill
4-12mm / 4-20 / 4-32 Triangular Handle Straight groove Step Drill Set 3-piece Step Drill Pagoda Drill
4-12mm / 4-20 / 4-32 Triangular Handle Straight groove Step Drill Set 3-piece Step Drill Pagoda Drill

4-12mm / 4-20 / 4-32 Triangular Handle Straight groove Step Drill Set 3-piece Step Drill Pagoda Drill

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Product Description

Product Name
Triangle handle ladder drill
Material & Application
4241 material is used for making holes in wood, plastic, thin iron plate, thin aluminum plate, etc.
Surface Treatment
Titanium plating
Packaging
The price displayed in the shop is the price of plastic bags, which is sent to OPP by default.
Product Features
  • 1 The unique step structure, a drill can open a variety of sizes of holes, a step drill against a box of drills.
  • 2 It does not need to use the center punch, so it is not easy to break compared with the ordinary twist drill. In site construction, a ladder drill is applicable to various specifications.
  • 3 Deburring, chamfering, circular hole expanding and functions that twist drill can't complete become possible.
  • 4 Compared with ordinary twist drills. Small shaking, no need to lead the use of center punch can also open beautiful aperture out.
  • 5 Tools: pistol drill and bench drill. It can effectively extend the service life of the bit by injecting water and cooling while working. The recommended drilling speed is 250-400 rpm.
Special Note

M35 material must be selected for stainless steel drilling. If 4241 material is selected as a hole, the drill bit will be abandoned. The thickness of workpiece is less than 5mm! When drilling the steel plate, the relatives should pay attention to water cooling. The drill bit is easy to backfire due to high temperature smoke during use. If the guests insist on such operation, the drill bit will be scrapped soon.

Specifications & Weight
Specification Steps & Sizes Handle Size
4-32mm 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32mm 10 mm handle
4-20mm 4, 6, 8, 10, 12, 14, 16, 18, 20mm 8mm handle
4-12mm 4, 6, 8, 10, 12mm 6mm handle
Product weight: 4-12 weight 20g, 4-20 weight 50g, 4-32 weight 155g, 3pc weight 225g.
Frequently Asked Questions
Q: What materials can be drilled using the 4241 material ladder drill?
A: The 4241 material is designed for making holes in wood, plastic, thin iron plate, thin aluminum plate, and other similar materials.
Q: Can I use this 4241 material drill bit on stainless steel?
A: No. M35 material must be selected for drilling stainless steel. If you choose the 4241 material for this application, the drill bit will be damaged and abandoned.
Q: What is the maximum thickness of the workpiece for this drill?
A: The thickness of the workpiece should be less than 5mm.
Q: Which tools are compatible, and what is the recommended speed?
A: It is compatible with pistol drills and bench drills. The recommended drilling speed is between 250 and 400 rpm.
Q: How do I prolong the life of the drill bit during operation?
A: You can effectively extend the service life of the bit by injecting water and cooling it while working, especially when drilling steel plates to avoid overheating and smoke damage.
Q: What are the core advantages of the step design over a twist drill?
A: The unique step structure allows one drill bit to open multiple hole sizes. It operates with less shaking, does not require a center punch, is less prone to breaking, and performs functions like deburring, chamfering, and circular hole expanding.

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