Description：
2 Holes:
1. Non-optic
2. Autoclavable
3. 360 degree swivel
4. Anti water retraction
5. One touch lock system
6. Backsiphonage prevention
7. NSK QD-J B2 Swivel Coupler Style
8. Fit into RUIXIN Rhein RXB Series High Speed Dental Handpiece.
9. Compatible with NSK High Speed Dental Handpiece & 2-Hole Connecting Hose.
4Holes
1. Non-optic
2. Autoclavable
3. 360 degree swivel
4. Anti water retraction
5. One touch lock system
6. Backsiphonage prevention
7. NSK QD-J M4 Swivel Coupler Style
8. Fit into RUIXIN Rhein RXB Series High Speed Dental Handpiece.
9. Compatible with NSK High Speed Dental Handpiece & 4-Hole Connecting Hose
