"Bought this to accurately drill 3 off 8mm dia holes on a PCD through porcelain tiles after struggling to control the drilling of a 20mm dia hole the night before. A great price for the versatility, albeit it doesn't have a 20mm dia guide. The suction cup works well, even on textured tiles and held the drill plate rigid."
"I am worried when I consider replacing the shower curtain tension rod with a permanent one because it involves drilling on tiles and I am not good at DIY jobs and it is my first time doing any drilling. However this little thing comes to rescue and I drill on those slippery tiles without scratching their surface or cracking them, which is no less than a miracle for me. The price seems a bit deep but it is definitely worth every penny - much cheaper than having your tiles replaced."
"This just makes life a little easier when drilling very hard porcelain tiles. You could get by without it, but the task is difficult enough & for the extra cost buy it. Just needs a flatish area for the sucker to fix, so you may struggle around window frames, etc. I wouldn't bother for ceramic tiles."
"Makes it easy to use particular sizes of diamond hole cutters on wall floor tiles with a free hand power drill. Stays stuck to wall very well and centers the bit for starting the cut. Would be even better if more sizes catered for."