Extended Dry Diamond Core Bits For Deep Walls

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Extended Dry Diamond Core Bits For Deep Walls
 Extended Dry Diamond Core Bits For Deep WallsExtended Dry Diamond Core Bits For Deep Walls 
Size (Dia x Length):  
Our Price:  £44.00(Exc. 20% VAT)

Model:  CD.LP.DRY.57x400.A
Brand:  Right Lines

Applications: These core bits have extended barrels to drill into deep walls. The smaller diameters will also help electricians and plumbers to drill through  double walls in 1 action to fit conduit pipes or plumbing pipes. They are especially useful in the walls of older building where the middle may be loose-filled. Once drilled through, the pipe can be inserted as the core bit is withdrawn to help avoid fall-back of the loose fill. They use standard dry core bit 1/2" BSP fittings. Use a power drill without hammer action and with a clutch or torque limiter. Ideal power would be 1kW or more, especially for the 107mm size. A pilot drill is not used with these extended core bits. 


  • Premium diamond segments
  • Laser welded segment joins for strength
  • Dust feed 'N' slots remove dust from cutting face.
  • External spiral dust feed to push dust to back.
  • Takes standard dry core bit fitments 1/2"BSP male adaptors.
  • Ideal for most wall stone, brick and concrete.

Also Available: We stock a range of accessories for dry core bits.

Tip: As extended cores do not use pilot drills a simple positioning holder to start drilling, can be made using a 'v' shape cut out of a piece of wood.

Delivery Options:

We will normally dispatch orders received by 3.00pm on any working day, that same day. Orders valued at below £50.00 + VAT will be given the default 2-3 day delivery throughout UK at a charge of just £3.00, unless next day delivery is selected at just £5.00. Orders valued £50 or over + VAT will be given free express delivery. This will be next working day for most of Great Britain but a little longer in Northern Ireland, Islands and some remote areas.

We can offer a faster Before 1.00pm option for deliveries to most of mainland Britain for an extra £4.00 + VAT.

Saturday delivery is available for most parts of Britain for an extra £10.00 + VAT.

Remote Areas: We do not surcharge deliveries to Northern Ireland, Islands or remote areas of UK, but some options such as next day or before 1.00pm may not be available.

Deliveries Outside UK:

We have carrier contracts that enable us to deliver to most countries. Please ask us for a quote if requiring delivery outside of UK.

For the Republic of Ireland, there is a dedicated website: www.rightlines.ie which will calculate the delivery charge for you. This is normally subsidised and in many cases free.