EDIT: SOLD! EDIT to Clarify: These are for a size UK 10 not US 10 These fit perfectly on my Size UK10E C&J Hallams. Haven't tried them with any other C&J line but this is their standard shoe tree so i'm guessing they fit most. These are brand new btw, i have't ever used them with any shoes (bought 3 pairs originally but only use 1 so figured i might as well sell these on). These retail for $105 at Ben Silver. Will sell each pair for $65 shipped or $120 shipped if you buy both pairs. Paypal payment preferred. Free shipping to anywhere in the world. 
