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The Alpha SM6RTP-B is a six-piece metric reduced shank drill set covering 14.0mm to 20.0mm, ground full length from high-speed steel and finished in black oxide. Each bit in the SM6RTP-B carries a 12.7mm shank, so large diameters run in a standard drill chuck. The set is supplied in a TUFFBOX PRO case with a 120ml bottle of Alpha Liquid Gold lubricant.
Standard jobber bits stop at 13.0mm because the shank diameter matches the cutting diameter. That leaves a capability gap whenever a switchboard gland entry, a cable penetration or a tray fixing requires a larger clearance hole. The SM6RTP-B removes that limitation with a 12.7mm reduced shank on every bit, so a 20.0mm penetration runs in the existing drill. The 118-degree split point initiates the cut accurately on a punched steel surface without wandering.
Six diameters cover the large clearance holes that recur on switchboard fabrication and metal framing, consolidated into a single case rather than loose in a tool bag. The black oxide coating retains cutting fluid on the flute, assisting chip evacuation and heat dissipation through extended runs in steel. Three flats on each shank eliminate rotation in the chuck when the cut loads up near breakthrough. Colour-coded latches on the TUFFBOX PRO case identify the metric set within a stacked kit without opening it.
The SM6RTP-B is a high-speed steel set and is not listed for masonry, concrete, brick or tile. It is also not a step drill or hole saw, so available diameters are limited to the six supplied sizes. Running these bits dry in stainless steel shortens edge life considerably, so apply the supplied cutting fluid on harder grades.
(SM6RTP-B)
The Alpha SM6RTP-B set contains six metric bits: 14.0mm, 15.0mm, 16.0mm, 18.0mm, 19.0mm and 20.0mm. All six are reduced shank drills, so each one drills above the shank diameter. The set is supplied in a TUFFBOX PRO case with a 120ml bottle of Alpha Liquid Gold cutting fluid.
Every bit in the set has a 12.7mm reduced shank, which fits a standard 13mm keyed or keyless chuck. That is how a 20.0mm hole is drilled without stepping up to a larger drill. Three flats machined on the shank stop the bit slipping in the chuck jaws under load.
Stainless steel is one of the listed materials, along with mild steel, wood and plastic. The bits are ground full length from high-speed steel with a black oxide finish that holds cutting fluid on the flute. Apply the supplied Alpha Liquid Gold lubricant and keep the speed down on stainless grades.
The set suits both power drills and pedestal drills. A pedestal drill gives better control on the larger 18.0mm to 20.0mm sizes because feed pressure stays even and the workpiece can be clamped. The 12.7mm shank fits standard chucks on both tool types.
This is a high-speed steel metal drilling set, listed for steel, stainless steel, wood and plastic. Masonry, concrete, brick and tile are not listed applications and need a carbide-tipped masonry bit such as the Alpha SDS Plus German 2 Cutter range instead.
Warranty runs for one year for domestic use and one year for commercial use, starting from the invoice date. Claims are handled by return to Sparky Direct. Damaged or faulty goods should be reported within 24 hours of delivery so a return label can be issued.
The Alpha SM6RTP-B is available online from Sparky Direct, with Australia-wide delivery to any state or territory including regional areas. Sparky Direct is an Australian electrical wholesaler established in 2005, supplying more than 500,000 customers with transparent trade pricing.
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Warranty starts from Invoice Date
Domestic Use: 1 Year
Commercial Use: 1 Year
Warranty Method: Return to Sparky Direct
| Specification | Details |
|---|---|
| Series | Reduced Shank |
| Type of Measure | Metric |
| Material | HSS |
| Set/Kit | Tuffbox Pro |
| Shank Type | Reduced |
| Sizes | 14.0, 15.0, 16.0, 18.0, 19.0, 20.0mm |
Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.
Sparky Direct does not provide installation advice and does not assess product suitability for individual circumstances unless expressly confirmed in writing. Customers must confirm correct product selection, compatibility, compliance, and suitability with a licensed or appropriately qualified professional prior to purchase.
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