These are USED Mavic Ksyrium SL rims that, when I properly disassembled the wheels, were round and true. These rims have been closely inspected and I found them visually to be structurally sound. Please be aware that they have varying degrees of cosmetic marks that are from normal usage. The tubular rims have varying degrees of glue residue still on them. These are a viable option to keep your silver Ksyrium SL wheels on the road for many more miles instead of having to by new wheels. These rims are compatible with 2004-2007 Ksyrium SL wheels.