The glass fibre rod is sold in lengths of one meter, which you can cut and mount for spare parts. There are two part numbers, depending on the rod diameter, ZCKY1305964001 in 3mm, or ZCKY1305964002 in 6mm. These can be used for ZCKY55, ZCKY52, ZCKY59 or ZCY55, ZCY59 rod levers.