| | |  | Freewheel & Cassette Tools | Home » » » » Park Tool Chain Wear Indicator | | | | | | | Description: | | A worn chain shifts poorly and wears sprockets. The CC-3 is a double sided "go, no go" guage designed to accurately indicate when a chain reaches .75% and 1% wear, the points at which most chain manufacturers suggest replacement. Made from laser cut steel for accuracy. . | | | Features: | |
• A worn chain shifts poorly and wears sprockets.
| | | Product Details: | | | Product Length:
| 0.39 inches | | Product Width:
| 3.54 inches | | Product Height:
| 8.66 inches | | Product Weight:
| 0.1 pounds | | Package Length:
| 10.71 inches | | Package Width:
| 1.65 inches | | Package Height:
| 0.08 inches | | Package Weight:
| 0.13 pounds | | Average Customer Rating:
|  based on 23 reviews |
| | | | Customer Reviews: | |
Average Customer Review:
 ( 23 customer reviews )
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Most Helpful Customer Reviews
14 of 15 found the following review helpful:
 Removes the guessworkMar 03, 2008
By Philip J. Bohlken
Yes, you can measure chain wear by holding a rule to the chain and measuring the length between pins over 12 inches. But, you need a hand to make the chain taut and a hand to hold the rule at the first pin and another hand to hold the rule at the pin twelve inches along. This tool does a good job and you can use one hand only. It is well worth what it costs.
9 of 9 found the following review helpful:
 It worksNov 16, 2010
By Andrew W. Cameron
"Andy Cameron"
Hi folks,
This is a "go or no go" gage either it fits into the chain which means the chain on your
bike needs replacement, or the gage does not fit into the chain which means the chain is
still good. So your asking does it do the job--YEP works fine!!!
12 of 13 found the following review helpful:
Quick, Cheap, EffectiveMay 03, 2011
By ChicagoCPA
Until recently I was blissfully unaware of chain stretch. My chainring and freewheel and chain all "grew up" together. All seemed okay until I finally got a bike tune up and I learned that one cannot just install a new chain in this case because the stretched chain has eaten thru the chainring and freewheel so much that a new chain simply will no longer fit (in retrospect, it makes sense, but at the time I just just annoyed that they refused to replace the chain without replacing chainring and freewheel as well, saying the slippage would make it nearly unrideable. I did convince them to NOT replace the freewheel and sure enough, the slippage was extremely annoying).
So now I have one of these and when the stretch exceeds 1%, I will just buy a new chain, rather than having to deal with replacing the freewheel and chainring as well.
4 of 4 found the following review helpful:
Slick little go/no-go gaugeApr 27, 2011
By Raleighphile
"Have Raleigh, will travel"
This handy tool takes the guesswork out of chain maintenance. Sure it is possible to use a good metal ruler to measure a 12" chunk of chain. Line up the 0 mark of the ruler at a rivet, look 12" down the chain. If the first rivet after 12" of chain is under 1/16" longer than the 12" mark it is still OK. If it is between 1/16" and 1/8" too long then it is "iffy," and if it is longer than 1/8" then it must be tossed or your cog(s) & freewheel(s) are in jeopardy of rapid wear too.
This gauge does all this eyeball measurement stuff for you. It'll tell you right off if the chain is good/iffy/no-go by simply placing it on the chain and seeing if one or the other end slips into the chain notch. You don't have to put the bike on a stand or bend down on your knees and get a flashlight or squint to read a ruler in your dark hallway where you store your bike. A blind man could use this tool or you could teach your 5 year old kid to use it.
Why do things the hard way?
3 of 3 found the following review helpful:
Chain Wear ToolAug 27, 2011
By Bryan
Very simple to use. One way it indicates the chain is almost ready to be replaced. Should order chain at this time. The other way indicates chain needs to be replaced.
See all 23 customer reviews on Amazon.com
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