I have been very disappointed by the 08-0058 chain tool I purchased for riveting my DID 520 VX2 chain. Overall, it seems like a good complete kit, but the "large anvil" part is clearly a weak point. I was only riveting to the midpoint of the manufacturer's range and broke 2 anvils in doing so. In both cases, the anvil split into 3-4 pieces with the "pin" portion pushing through and the "flange" portion shattering in to 2-3 pieces. I was using the tool as described and riveted in small increments, taking caliper measurements between each increment. When the first anvil broke, I had to place an order from MotionPro for additional parts, which set back my project a week to a much busier time. It appears that the rivet indentation in the anvil creates a weak point with not enough additional material and it will break under normal operating pressures. I see some other reviews here of people having the same problem. If I could go back, I would have purchased a different brand that would hopefully not have this flaw.

Most of the negative reviews for this tool are because guys broke the breaking pins during use. "Those guys are animals!," I thought. "I'll be careful and that won't happen to me!"

It happened to me. And I did everything right.

Don't believe me? Here are the details: The tool was brand new. The only thing I did with it was rivet one master link. I was using a supported chain size (530). My chain has a hollow-point master link, like it's supposed to. I installed the tool EXACTLY as instructed. I even lubed the threads with grease (though the threads did not fail). I was tightening with a box-end wrench only, and I was checking -- with digital calipers -- how far the pins were expanding as I went.

First problem, turning as hard as I dared, I was BARELY able to get the rivet to expand to the minimum allowable size (per the chain manufacturer). It expanded, but just barely enough. So the tool is marginal for riveting 530 chain.

But the main problem, and the reason I'm returning it, and the reason I'm taking time to warn you all about it, is that the anvil provided for riveting is made in such a way that it's not strong enough to take the force required to rivet a chain.

The anvil is (correctly) designed to support only the pin, not the whole link. The right way to manufacture that anvil would have been to turn it out of one piece of metal. Unfortunately, to save a few cents in manufacturing, they made this anvil as two parts pressed together -- a little rod and a little ring. The force required to rivet 530 links to even the minimum size is greater than that press fit could take. The ring cracked, the pin slipped, and my master link's pin got shoved out the back (as if I were trying to break it), ruining it.

If you have a lathe handy, you could make a better anvil yourself. I do have a lathe handy, but I'm not paying $80 for a tool that breaks the first time it's used.

Slick little kit. I was forced to buy it through my own stupidity (I bought a chain breaker tool and a link press tool... but neglected to buy a rivet tool) but realized that the right tool plain old makes the job easier. And I had to do the job 3 times (again, I'm pretty dumb). By the third time I was pretty comfortable with the tool and appreciative of it's design.

Tool is not very good. I used to break and install (1) master link on a DID520 chain. The 3.8mm pin used to break the chain broke inside of the tool with very little effort. I subsequently had to use a different tool to finish breaking the chain.

When I installed the master link the anvil that pushes against the side plate shattered. DID recommends 0.217" - 0.228" as the final diameter of the master link rivet for the chain I was using. The anvil broke and the diameter of the master link rivet measured 0.220", the parts of the tool were barely capable of deforming the rivet to the manufacturers specification.

All of the pins & anvils in the kit are made from poor cast materials. Very disappointing from a company that normally makes quality motorcycle tools.

Returned this tool. Two parts broke under standard use, first while pinning, second while breaking chain.

Anvil broke on the first crank on the 2nd rivet I pinned on a DID 525 ZVMX. Then I watched as my 12-year old daughter (more careful, less torque, actually reading the directions, waiting for me to verify at each step, and most importantly, sober) broke the chain breaker pin when she'd already ground the staked chain pins off of a rusty 520 chain. For $88, it's going back. Disappointed, as my other MotionPro tools have been great.