semi proud of my 8mm line socket abomination while I wait for the tekton and Pedros I ordered. It works well. Eventually maybe I'll upgrade to the Koken version.
Also upgraded my chain checker to a Park CC-3.2 after I realized the new Shimano 12 speed stuff is only supposed to be run out to .5 stretch.
Made in the USA still:
A heads up on the chain checkers in general.
The new 12 and 13 speed groupsets are very high Tolerance, 0.5 mark means changing the chain and maybe even the cassette (a very expensive ordain) in order to keep the crankset in pristine condition.
Additionally, for the sram flattop chains with oversized rollers, and quite probably for shimano, this style of chain checker is inappropriate.
The reason with oversized rollers is that they can <<mask>> chain wear and the chain checker prong may not get in but the chain could be in fact worn. This happens to chain checkers with two prongs. To compensate for this you need a 3 prong chain checker, like the shimano TL CN 42, or a park tool one. These measure on the same side of rollers, not on opposite side, thus measuring real chain wear (two prongs are spring loaded let's say and push the 3rd on the corresponding side of a roller) And at least the shimano one is a go-no go gauge, meaning there are no values, if the prong gets in thr chain is to be changed.
Sram explains it, the weird thing is that shimano offers also this style of tool, but they do not mention exactly why and to my knowledge only sram uses oversized chain rollers. However the shimano tool is cheap, made in Japan, of exceptional quality and the mating surfaces are actually ground, not just laser cut.
