GripIt 18mm Undercutting Tool (4074J)

£ 6.99INC VAT

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GripIt 18mm Undercutting Tool (4074J)

Ideal for use on dot and dab, double thickness or insulated plasterboard to create a recess for 18mm Gripit (red) fixing wings to open. Removes insulating fibre to prevent entanglement.

  • Removes Wall Space Adhesive
  • Adjustable to Plasterboard Thickness
  • Attaches to Any Power Drill
  • Used with 18mm (Red) Gripit Plasterboard Fixing

More Info

View all: GripIt Plasterboard Wall Plugs

£6.99INC VAT (£46.60/Kg)

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Rated 4 out of 5 by from essential pc of kit Used gripit without tool... it worked. Used it with the tool, like night and day! Especially in a new build! Tried everything else and this has been the best solution.
Date published: 2021-04-24
Rated 5 out of 5 by from Overall good quality Great extra product to go with the fixings just only need them now and again but great for clearing and plaster numbs that the builder might have used to stick on the board
Date published: 2021-04-13
Rated 5 out of 5 by from Great tool Easy to use, cuts a perfect recess allowing the "wings" to open, would highly recommend
Date published: 2021-01-19
Rated 4 out of 5 by from Does The Job Great little time saving tool, just a shame the required Allen key isn't included
Date published: 2020-12-22
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Does this come with an Allen key to adjust depth?

Asked by: LouiseR

When using this with double insulated plasterboard (2 x 15mm sheets giving 30mm total width) - would you essentially cut a 'chamber' 15mm into the insulated wall for the wings to expand behind the first sheet of plasterboard? there would still be some plasterboard behind the chamber created? Doesn't seem possible to create a chamber 30mm in, at the back of both sheets, as the 20mm lip on the gripit stops it pressing back far enough into the 15mm hole drilled. Thanks
Asked by: Mk50

What size Allen key does this need? Savage that it doesn't come with one

Asked by: Dazza315201

How does it work?

What am I missing, I can see depth control and what would drill the hole but how does it make an undercut? I have no idea what to expect when I drill into the wall in terms of thickness and any gap for the wings(17yr old house, wall separating two rooms)
Asked by: Dave8486111
Gripits are designed for plasterboard thickness of 9.5mm-15mm. Most plasterboard has a gap behind, however, if it is double thickness, insulated or dot and dab fixed, then there is no gap. The Undercutting Tool is used after the initial hole is drilled for the Gripit; it should be used in a circular, clockwise motion which allows the area behind the plasterboard to be cleared. This will then allow the wings on the Gripit to open in the recess made. We do have a helpful ‘How To Use’ demonstration video, which may help to answer any further questions you may have If you did have any further installation queries, please contact us at , as we are always more than happy to answer them.
Answered by: GripItHeadOffice
Date published: 2021-05-24

What size Allen Key for collar adjustment.

Asked by: Bof10
For this Undercutting Tool, you will require a M.127 Allen Key. If you are unable to find the correct size, please contact us at and we will be able to resolve this for you, along with any further questions you may have.
Answered by: GripItHeadOffice
Date published: 2019-09-21
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Brand GripIt
Manufacturer Guarantee 1 Year Guarantee
Pack Size 1
Pieces in Pack/Case 1
Product Type 18mm Undercutting Tool