SHARP PEBBLELarge Flattening Stone- Dual Grit Coarse/Fine Sharpening Stones Flattener- Diamond Grooves Whetstone Fixer-Re Level Any Whetstones, Waterstones, Oil Stones

So, I bought this just over a month ago when I got my sharpening kit...I went to use it last night for the first time and its worn down already, the pictures are after 1 stone - it wears faster that my sharpening stones... not very good, and at this rate, ill need a new flattening stone after my next round of leveling - very expensive for 2 uses....Gone to return it today, and the returns ran out 5 days ago - so I'm stuck with a useless stone. not very impressed.***EDIT***After contacting Amazon about this, they authorised a return for me, so im much happier now that im getting a refund.GOOD OL AMAZON. Customer service is, on the most part, the best there is!

Looked good but totally pointless as not flat.Opened it and used it to 'flatten' a whetstone only to find the flattening stone was dished out in the middle creating a dome in my whetstone. Had to spend the next 20 min undoing the damage. Have returned for a refund as unfit for purpose.

I have just resurfaced three of my sharpening stones and re sharpenned my rcord 06 plane.What an improvement.

Too soft. It was ground down by my whetstone, rather than the other way around.

I used it to flatten 1200, 4000 and 8000 g. Stones. Works great, the stone is flat and was delivered without any defects. Good size !

Used once on a 400 grit whetstone using the appropriate technique and it lost its flatness before levelling the stone.

Just what was needed to flatten out my wetstones

Good flattening stone, the grooves also work well for putting a tip back on if you have knocked it off.