Came to work this morning with my list of nuts and bolts, and forgot the size of the 4 bolts that hold the rear bearing carrier on.

Sure they are M10 although not sure of the length or if they are set screws or bolts.

The carriers are off a sierra backend Any ideas?

They are indeed M10 and they are bolts, but with 13mm heads as std.

Not sure on length but 35mm will be plenty and you can cut them down a touch if they are slightly too long. I think they are actually 30mm

Many thanks for that, the guys are putting an order in at work and I can ride on there discount.

Although the supplier only have 30 or 40mm long I will go 40mm and cut them down.