MAC AllisterAdjustable Tile Hole Cutter, 20mm to 90mm - Electric Drill Bit

Totally useless and maddening. Created by the devil himself to test peoples resolve. Save your sanity, pounds, patience and tiles and just buy a diamond hole saw instead. Create a profile, add a little water job done. I used https://smile.amazon.co.uk/dp/B072LDDX5X/ref=cm_sw_r_cp_apa_i_EgdjFbFYD8XXWShould of gone down that route initially and saved time, money, tiles and effort. Honestly avoid this useless.

No good at all without the twist drill. Vibration is horrendous.The illustration shows a twist drill so not as shown.

Not what I was expecting.Nit a great finish

Rubbish

Useless, didn't even cut 1 tile before the end deforming. Stick to diamond tipped hole cutters.

This is a good tool for DIY.