1/8" Barb, Washer and Sleeve Kit 
OEM part number 
This item corresponds with the following brands and manufacturers.
A-dec(R) 023-001-03 +
A-dec(R) 023.001.03 
Beaverstate Dental 030-001 
Forest Dental 0016-101 
Midmark 117349
Engle Dental Systems 80-116
RPI ADB011
Marus 002R002X