Bionso 4 Pcs Oscillating Diamond Multitool Blade Set Mortar Cutting Saw Blades for Grout Removal and Tile Semicircle Blades Fit Dewalt Worx Rockwell Milwaukee Makita Bosch (65mm Semi Circle Blade)

Good quality for your money only used one blade to take my floor grout out easy work

Half round ones waste of time the T shape is great fast removal of grout just get them ,,,if you have wide 4-5 mm grout put 2 together in your Multi Tool ..took 3hrs removed 6m2 of grout in a bathroom floor

Works great at chasing plaster

Perfect fit replacements, robust and cut well

I was hoping to use this to clear up grout to redo the bathroom but they're too thick for that - they work better on floor tiles. I have however been able to try out with a slab that needed a notch taken out and cutting some mortar to release a brick for a new catflap and they have held up well. I like the choice of shapes and the curved leading edge which definitely makes it easier to start a cut neatly and would have worked for the grout if the tiles weren't so close together. I'm using with a Ryobi one multi tool and they fit and work perfectly. I have only used for a few small jobs but am confident they will last for a decent length of time.

FANTASTIC, saved me a lot of hard work and sliced fingers trying to removed dirty grout from between bathroom tiles. Cut the job time in half if not more would definitely recommend to any competent DIYer having to regrout tiling.

Really useful for clearing large area of excess tile adhesive around the tiles before grouting. Be careful when using , so not to chip the tile edge. Worked really well and a lot faster than using a hand grout removal tool. One blade was all that was needed for a 14m2 room and still had a lot of life in it.

When I saw these tool attachments I thought, "Great! Perfect for chopping out the tiles in my kitchen where new cabinets and sockets need to go!" For the most part they have been great - enabling me to cut away the grout between existing tiles, allowing me to then chop out the tiles easily with a hammer and chisel. Whilst all of the bits fit perfectly in my DeWalt multi-tool, the two "semi-circular" bits barely extent out past the body of the multi-tool, and as such have very limited value. Overall, usefult tools, but the semicircular ones could be a tad deeper.