The H.28 has a slender, comfortable design with tapered grip and pre-lubricated ball bearings that do not require any additional lubrication. Comes with 3/32” and 1/8” collets, and pin and chuck wrench for changing collets and accessories. Other fractional and metric collets are available in Collet Set 600. 5-1/4” long, 23/32” dia. (center), 1/2” dia. (taper), wt. 3 oz, ship wt. 4.35 oz. Member of the Foredom system of ”Interchangeable Handpieces”