Handpiece #18 has permanently lubricated ball bearing for cool, quiet, continuous-duty operation.
With the addition of a Duplex spring, the #18D is more flexible than the standard model. Used for very delicate work and when more precise control is needed. Recommended for experienced flex shaft users.
Both models include a 3/32" collet installed. (Replacement collet available.)
Handpiece #18 measures 5/8" diameter, 7" long. Weighs 3.5 oz.