4 Drill Bit Adapter Chucks Mandrel For Dremel Tools. Drill Bit Adapter Chuck. This is a new drill bit adapter chuck. Great for drill bits, burs, polishing bits, etc. Includes 2 collets. It has a 3/32" shank. Pin Chuck. This is a new pin chuck. Can be used with a Dremel tool. Small wheels and burs can be used on larger, polishing motors by threading onto tapered spindles. Holds drills up to 2.2 mm. Comes with 3 collets. It measures approximately 2 3/4" (70 mm). Has a 3/32" (2.5 mm) shank. Drill Bit Micro Chuck. This is a new drill bit micro chuck. Great for drill bits, burs, polishing bits, etc. Includes 1 collet. It has a 1/8" shank. Mandrel. This is a new mandrel. Can be used with flex shafts, Dremel tools and drill presses. Felt cylinders, rubberized abrasives and grinding wheels can all be used with these mandrels. Measures approximately 1 3/4" (44.5 mm) long with a 3/32" (2.5 mm) shank. We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.