Tube, Both Ends with Internal Threads / Both Ends with Internal Threads & Wrench Slot / One End with External Threads / One End with External Threads & Wrench Slot
JLCMC
Tube, Standard / One End with Internal Threads / One End with Internal Threads and Wrench Slot
Tube, One End with External Threads & Other with Internal Threads / Both Ends with External Threads / One End Stepped / One End Stepped & Other with Internal Threads