The Long Rotary attachment is a 13 inch  (33cm) straight rotary shaft that comes with the upper and lower 11 burrs.
Quickly connects in both the up or down positions.
Able to effectively reach the back edge of upper and lower 11 molars.
 
Accessories include:
Open Guard
Upper 11 Diamond Burr
Lower 11 Diamond Burr
Wrench and Pin Set
 
Product Info: 
Compatible with Pony Rotary Burr Set – PF0545 (Sold separately)