Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: how long is rear brake cable? can one of you guys measure it please?
Document: I ordered this set of brakes on November 25 and they didn't arrive until December 27! Keep the REALLY LONG shipping times in mind if you do order this set, in hindsight it may have been worth paying more to not wait so long. Now onto the product. My brakes came set up properly with the front brake attached to the left lever, rear right. I didn't need to trim the front but the rear brake will need about 2.5 inches taken off.
And other than coming cross-tubed for the front/rear lever arrangement (opposite to what Americans expect), there were no gotcha's.
Had to buy the missing front brake adapter separately. The claimed they would mail it to me but never did and didn't contact me when I asked questions of when it would be mailed out. I ended up just purchasing the adapter from the excelcycle amazon store.
The levers themselves are comfy and give adequate room for 2 finger braking if that's you style. The calipers come with a set of resin pads that provide good stopping power but squeal like all hell when the rotors are wet. The rotors are etched "resin pads only" but one could probably run semimetalic pads (i would do some research rirst though). All the necessary hardware was included and bolted right on.
They generally had *very* favorable reviews, and were most often compared to much more expensive Shimano disk brakes.They're a best-buy at this price-level, with comparable features and performance to much more expensive brakes....the competition for my budget in this range were really Avid BB7's btw. My wife has BB5's and they've proven to be more than merely adequate, bordering on VERY nice (and you cannot believe how picky she is lol).
They arrived in fine fettle, wrapped in bubble wrap and packed loose, though the shipping carton was a little worse for the wear.Kudos to RockBros LLC out of China for vastly exceeding my expectations.I will be placing other orders with them (great! prices).
These are great brakes. I replaced some older Hayes and I'm very happy with the feel and quality. Some reviews said the levers were reversed and they had to be swapped and then re-bled. Mine bolted right on. The levers were right, broke them in properly and they work exactly as expected.
So I didn't bother: I just bagged the original brakes, levers, and rotors to preserve them "in the event". (I'm not an MTB'er either really. And regardless, I wouldn't want to thrash a classic, original-and-pristine semi-historic Zask'. It was the lesser of two evils to re-purpose it with an eye to preservation of a classic. If you're shaking your head with disdain over that choice, take comfort that at least it's being used again. Be happy.
Modulation is ...well, perfect. Whether on streets or down the very mild (but somewhat sandy and moderately steep) off-road trails I've rode it on, control and braking is smooth, assuring, and entirely satisfactory. The control input viz response is smooth and silky. Impressively so.The rotors were ...well, they were lighter by far than the original. They're steel.
It comes with everything you need to stop safely!
Answer: yes