The problem with these sets Alex is that they normally use allen keyed socket bolts, this is not a good idea IMO, any that face upwards collect water in the recess, that promotes rust even in stainless steel sets, then when you got to remove them they round off leaving you with a problem of how to remove them especially if they are recessed in the engine.
A far better solution, again just my opinion, is to use what Honda did for the later engine, namely 8mm headed shouldered bolts.
The way Honda did their part number system makes it very easy to find the correct bolt. For instance, a 6mm x 28mm shouldered bolt with an 8mm head as used on say the 250N is part number 96000-06028-00. The important bit is the middle 5 numbers. 06 means 6mm, 028 is the length. So if you wanted say a 6x32mm long bolt you'd just search for 96000-06032-00. The last 2 digits seem to be the colour, in this case greyish like a normal bolt. There are some that are black for instance and those last 2 digits change to reflect that. Same with chrome type.
The best way to find these bolts if you don't want to buy new from Honda is to trawl Ebay and find a bike that's been broken, they quite often sell all the loose bolts etc in a job lot, if the bike is fairly new they are in really good condition so look like new anyway, any that aren't in the job lot can be sourced from Honda. Yes it can be more expensive but the results are far better.
