Just got this today and used on a KTM 65sx rebuild I am doing. What a great little hone and at half the cost of the more expensive flex/ball hones. (the ball hones are also limited on the size of bore they can do) This was perfect for deglazing and putting a fresh cross hatch on the jug. the stones seem to be about 320 grit in my estimation and their length is just about ideal for the smaller bore even with all the port windows. the stones measure about 2 inches long and about 3/8 wide. this seems like the perfect tool for the small engine builder or dad trying to keep a kid dirt bike fleet up and running. I think it would work well on possibly as small as 50cc and as large as a 250-300cc 2 stroke motors depending on port size... for 4 stroke motors larger than 250cc, or car/truck engine you may need something larger. one size ALMOST fits all. great tool. great price. glad I got it. =)
7/1/2016 Edit: I just used to deglaze the jug on a Honda XR400, once again.. worked like a champ! Can do the larger sizes of bore too.. Love this thing! Also.. lets remember.. this thing can be had for less than 20 bucks... I haven't had any issues with mine on the two jobs I have used it for thus far.. But level your expectations. for the price did you expect to get a professional quality tool? No, but it does the job, and at the price point, point does it quite well.
| Manufacturer | Ampro Industries |
|---|---|
| Part Number | T71797 |
| Item Weight | 0.01 ounces |
| Product Dimensions | 12 x 3 x 2 inches |
| Item model number | T71797 |
| Is Discontinued By Manufacturer | No |
| Material | Metal |
| Item Package Quantity | 1 |
| Number of Handles | 1 |
| Batteries Included? | No |
| Batteries Required? | No |
