Engine Cylinder Hone Kit 45mm to 65mm Adjustable Handheld Honing Machine Tool Kit with 16 Stones Sizes 3" x5/16 x5/16 - Works for Mid-Size to Larger Car Engines

I will update after using, but arrived very fast, nice wood box, stones of 120 grit 180 220 & 320 grit.Bought for bore honing three virgin 60mm cylinders to 60.400, will update when finished.Update:Some of the stones have the steel backing incorrectly affixed so they wont fit in the mandrel.The 120 grit stones aren't flat on the back plate, so they rock in the mandrel, totally useless.After much screwing around I got a cylinder overbored .0020", but on the final strokes the tool kept chattering in the bore, so I've got a perfect bore with chatter marks in two places. Fortunately they are below the rings so no performance degradation, but it sucks that they make a potentially excellent tool so poorly that it fails at it's designed task.Maybe You'll get a good one. I had to take this one apart, file smooth all the slides, change the spring retainers, & file the backs of every stone, but now I'm boring 19 thousandths within a quarter thousandth tolerance!Bore with 120 grit to within .0030"Finish boring with 180 grit to .0020"Rough Hone with 220 to .0010"Finish Hone with 320 gritPlateau with a clean WD40 soaked ScotchBrite pad vertically just once down & once up to cut the peaks off the honing scratches, don't twist or spin in the bore or You'll be smoothing the valleys that hold the oil.I'll be buying the 50mm to 75mm next, overall best tool for the job under $500

Esta heramienta da un buen acabado a los cilindros, me gusto mucho y para mi es muy útil

Worked great bored aluminum cylinders .020 over with no problems.

Works as expected👍

Item took longer to receive. Was not packaged adequately. Box took the damage, tool inside was ok. Disappointed, not enough packing around metal box.

Stones didnt fix right and broke while putting on

Great company to work with. Excellent communications. Tool quality is well built. Nicely packaged. We bought 3 sets of these tools. Used it on a cylinder job and it simply just worked as expected. We will be looking for other products from this company in future.

Awesome