Silverline SDS Plus Masonry Drill Bit 20mm x 460mm 408971

Silverline SDS Plus Masonry Drill Bit 20mm x 460mm

Barcode: 5060012961077

MPN: 408971

Size: 20mm wide x 460mm long

Overview:

The Silverline 20mm x 460mm SDS Plus Masonry Drill Bit (408971) is designed for confident drilling in tough mineral materials when you need extra reach without stepping up to an ultra-long bit. Built for SDS Plus rotary hammers, it features a tungsten carbide tipped head for durable cutting performance in concrete, masonry, lightweight block and stone. The double-flute spiral helps shift dust and debris up and out of the hole to reduce binding and support smoother progress. Ideal for larger fixings and deeper holes through walls, this bit is a dependable choice for trade and DIY tasks where accuracy and consistent drilling matter.

Key Features

• Tungsten carbide tip for long-lasting performance in masonry materials

• SDS Plus shank for secure fit and efficient hammer drilling

• Double-flute design improves dust removal and reduces clogging

• 460mm length for deeper drilling with improved reach

• Helps produce clean, accurate holes with steadier drilling progress

• Suitable for concrete, masonry, lightweight block and stone

• 20mm diameter for larger anchors and service penetrations

Specifications

• Brand: Silverline

• Product Type: SDS Plus masonry drill bit

• MPN: 408971

• Barcode: 5060012961077

• Diameter: 20mm

• Overall Length: 460mm

• Shank Type: SDS Plus

• Tip Material: Tungsten carbide tipped

• Flute Type: Double flute

Applications

• Drilling deeper fixing holes for anchors and sleeve fixings

• Creating holes for larger wall plugs and heavy-duty brackets

• Installation work through blockwork and masonry walls

• Drilling into concrete and stone where SDS Plus is required

• General building, renovation and maintenance projects

How to Use

• Insert into an SDS Plus rotary hammer and lock into place

• Mark the drilling point and check for hidden services first

• Start steadily to seat the tip, then drill with consistent pressure

• Withdraw periodically to clear dust, especially on deeper holes

• Clear debris from the hole before installing fixings or running services

SDS Plus Masonry Drill Bit 20mm x 460mm 408971 – Key FAQs

• What is the Silverline 20mm x 460mm SDS Plus drill bit used for?
  It’s ideal for drilling deeper, larger-diameter holes in concrete, masonry, lightweight block and stone commonly for anchors, sleeve fixings and service penetrations.

• Will this drill bit fit an SDS Plus rotary hammer?
  Yes. It has an SDS Plus shank designed to lock securely into SDS Plus chucks, helping improve stability and power transfer during hammer drilling.

• Does the tungsten carbide tip make it more durable?
  Yes. Tungsten carbide is highly wear resistant, helping the cutting edge stay effective for longer when drilling abrasive mineral materials such as concrete and masonry.

• How does a double-flute bit improve drilling?
  The double flutes help remove dust and spoil more efficiently, reducing binding and helping you maintain smoother progress—particularly useful on deeper holes.

• Can I use this in a standard drill with a 3-jaw chuck?
  No. SDS Plus bits are designed for SDS Plus machines. A standard chuck won’t accept the shank properly and won’t provide the correct hammer action.

• How do I avoid the bit jamming in deep holes?
  Drill with steady pressure and withdraw the bit regularly to clear debris. Avoid forcing the tool, and let the rotary hammer’s impact action do the work.