#37-120 Revolving Tool Holder - 1/64" to 3/32" Diameter Capacity. Wooden handle offers fingertip control by placing ball handle in palm of hand and using fingetips to guide and turn chuck independently of the handle. 2 collets with capacity range of 1/64" to 3/32" diameters. Intended for round shank tools including Drills, Taps and Reamers.
#37-130 Non-Revolving Tool Holder - 1/64" to 3/32" Diameter. Fixed wooden handle includes 2 collets with capacity range of 1/64" to 3/32" diameters. Ideal for use with small round shank tools including chisels, files, reamers, beading tools, burs and gravers.