説明
A hole is only a hole once it is round, clean, and exactly where you marked it. Everything else is damage you will be repairing later. The Bore Set exists for the moment a hole has to pass through sheet metal, and it is built from tungsten carbide rather than high speed steel for the simple reason that carbide keeps its edge through far more metal before it starts to wander.
Each cutter is machined with multi-tooth gear geometry and carries its own centre alloy drill bit, which is what keeps the saw on the mark while the teeth bite. A spring on the pilot drill prevents the classic failure of hole sawing, the moment where the cutter grabs, stalls and spins the work instead. The cut is steadier in thin sheet, where high speed steel saws tend to tear through and leave an oval.
The set covers the sizes that ordinary jobs ask for, 16, 18, 20, 22, 25 and 35 mm, with eight pieces in the kit, a total weight of 830 grams, and a storage case that keeps the cutters from chipping each other in a toolbox. The teeth are rust proof, the material is hardened tungsten carbide alloy, and the whole kit is CE certified for metalworking use.
Measure twice. Cut once, with a tool that stays on the line.
Key Features
- ✦ Tungsten carbide tipped teeth that stay sharp far longer than high speed steel
- ✦ Multi-tooth gear geometry for controlled, chatter-resistant cutting
- ✦ Centre alloy pilot drill in every cutter for accurate positioning
- ✦ Spring on the pilot drill to prevent grabbing, stalling and work spin
- ✦ Covers 16 mm, 18 mm, 20 mm, 22 mm, 25 mm and 35 mm cutting diameters
- ✦ Eight-piece kit with a storage case for safe transport
- ✦ Rust proof, hardened alloy construction
- ✦ Total kit weight of 830 grams
- ✦ CE certified for metalworking applications
Technical Specifications
- Material: Tungsten carbide alloy tips on a hardened alloy body
- Type: TCT core drill bit, hole saw cutter
- Documented sizes: 16 mm, 18 mm, 20 mm, 22 mm, 25 mm, 35 mm
- Set size: 8 pieces including storage case
- Pilot drill: Centre alloy drill bit with spring ejection
- Tooth geometry: Multi-tooth gear pattern
- Total weight: 830 g
- Finish: Rust proof coating
- Intended use: Metal drilling, metalworking
- Certification: CE
- Package contents: 8 pieces of TCT hole saw and 1 handle case
Where It Belongs
The Bore Set belongs in the toolbox of anyone who cut through steel this month and will again next month: an electrician making gland entries through an enclosure, a fabricator drilling mounting plates, a plumber opening access holes in a stainless panel, or a vehicle builder fitting switches and grommets into sheet metal. It is equally at home in a home workshop where a single job justifies the kit, because a round hole with a clean edge is cheaper to buy once than to repair after a wander. Five common diameters in one case mean the job does not stall halfway through waiting on a second order, and the case keeps carbide teeth protected between jobs.
The EastSupplier Promise
- ✦ Vetted supply. Every unit is inspected at our consolidation warehouse before it ships.
- ✦ Tracked delivery. You receive a live tracking number, not a vague estimate.
- ✦ Human support. A real person answers within one business day, before and after the sale.
Frequently Asked Questions
Q: What materials will these cut?
A: The cutters are designed for metal drilling, including sheet steel and stainless sheet, with the correct speed and lubrication. They are not intended for hardened tool steel, stone or masonry.
Q: Why does the spring on the pilot drill matter?
A: Hole saws grab when the teeth break through. The spring pushes the pilot drill forward and ejects the core, which helps prevent the stall and spin that damages both the material and the tool.
Q: What drill speed should I use?
A: Run slower than you would with a twist bit, keep steady pressure and use cutting lubricant or oil. Carbide teeth want controlled speed and cooling, not aggression.
Q: Which sizes come in the set?
A: The documented diameters are 16, 18, 20, 22, 25 and 35 mm, and the kit ships as eight pieces with a storage case. That covers the common conduit, gland and fastener sizes.
Q: Will they fit a standard drill?
A: Yes. The cutters take a standard chuck, though a drill with a collared side handle is far easier to control on larger diameters.
Q: Is the kit suitable for stainless steel?
A: It will cut stainless sheet, but stainless work-hardens quickly. Use low speed, firm pressure and lubricant, and let the cutter do the work rather than forcing it.
Q: How should I store the cutters?
A: In the case provided. Carbide tips chip when they knock against other steel tools in a drawer, and a chipped tooth shows up as an off-round hole.
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