They fits and are a direct bolt-on to the following Kawasaki bikes: 2005-2021 ZX6r 2004-2015 ZX10r 2006-2021 ZX14r 2007-2021 Z1000 2011-2021 Ninja 1000 They also fit other bikes like the Versys 650 and Versys 1000, but I don't think owners of those bikes really care about braking performance all that much. Also, some of the above listed bikes which came with 300mm discs as stock will obviously need 5mm caliper spacer. Condition wise, they are used but 100% straight and the friction surface is smooth without any wear grooves. I've tried my best to convey that there are no grooves in the disc but it's pretty much impossible to show that on camera. You have to feel it with your fingers to convince yourself. The radial lines you see on the friction surface is pad material (aka glazing), even a new bike with 100 miles on the clock is going to have that, it's completely normal. If you want, you can remove that with a brillo pad, some BrakeKleen and a bit of elbow grease. I'm asking $280 plus actual shipping for the pair. Normally these have a new street price of around $600. I also have a matching round rear 250mm disc (as in non-flower/petal design) that I can throw in for an additional $50, though that will only fit the ZX14r, Ninja 1000 and Z1000 bikes, not the zx6 nor the 10 as those have 220mm rear discs. Pick-up in SoCal is welcome. See photos below for actual discs.