Foredom Interchangeable Handpiece · Tapered Grip 
The Foredom #44T Handpiece is a square drive handpiece that should be used with a key tip shaft only. It is a tapered grip handpiece similar to the popular #30 unit except that it has a collet-type chuck adaptable to larger accessories making it popular for roughing out and other operations requiring the larger accessories. Pre-lubricated ball bearings do not require any additional lubrication. 

Comes with 3 collets: 3/32" (2.35mm), 1/8" (3.18mm) and 1/4" (6.4mm) installed. Also comes with pin and chuck wrench. Other fractional and metric collets are available separately, see additional collets here.  

Specifications: 
5-5/8" long
1" diameter (center), 3/4" diameter (taper)
5.85 oz

Additional Resources: 
· #44T Handpiece Instructions
· #44T Handpiece Parts List