Fits MK-dent Quick Connectors System.........................MK-HC4021M
Fits Kavo Multiflex®
Quick Connectors System............................................ MK-HC4021K
Fits Sirona R/F® Quick Connectors System................... MK-HC4021S
Fits W&H Roto Quick®
Quick Connectors System............................................MK-HC4021W
Fits NSK MachLite/Phatelus®
Quick Connectors System.......................................... MK-HC4021NT
Fits NSK QD-J®
Quick Connectors System..........................................MK-HC4021NQ