Cheep, Sturdy and do the job Great .... comes with a BB to ISCG adepter.
Comes only in 2 sizes 32-36 and 36-40 the back plate is huge and if you are using 32 Ring the back plate and the skid plate are pooping out and not in a good way.
Was on my Bike for 6 months . i was doing some wight reduction to my rig so i replace it with somethinglighter and smaller. but in the end it did a great job! i love E-13 Products and its a shame they don't have any chain devices that are design for smaller then 32 Ring. Installation wise.... it toke me some Playing and try and error Whileinstalling it with my PF30-BB i replace the bolts that came with it with some longer ones because it needed a 6MM spacers to be installed on the bike. that allot of spacers :-) the skid plate id sturdy and strong even after some pavement hit and some rocks its still staid strong with a little marks to see. the upper skid was big Enough to deal with 10 Gears and not let the chain run away from it place.