Roy: The coax of probes is specially designed for a certain Zo and bandwidth. The small diameter means special dielectric and wire design.
Wideband probes eg 500 MHz...over 1 GHZ are degraded by tight bends or even kinks and must be treated carefully.
Most ebay sellers this its just a wire and wrap tightly. Have seen damaged BNC, bent probe tips and wrong ground wires and prob hats.
I try to buy ebay probes only id the seller is aware of this, and can pack properly. BEWARE!