Brake shoe size 2007 Cedar Creek Silverback

Crawl under the rig and there should be a sticker on the axle tube that identifies the mfr, model #, load rating etc. of the axle. Use that to look up brake info on etrailer. Most trailers, unless really large or small, have 12x2 brakes.

I did brakes on my Terry in 2017 and got 4 self-adjusting brake assemblies, new drums, bearing and seals for $400 with free shipping. Speaking of which, be aure to get self adjusting!