CR-10 HICTOP CTC A10 leveling knob attachment

These are alternate bed leveling knobs. The standard adjustment knobs seem to have 14 knubs on them. Mine had 18 and were a little bit larger. However I have a rebranded CR-10. Hictop sold by CTC as an A10. However if you find yourself with a Cr-10 with the 18 knub adjusting knobs, these are press fit on them.