Check the listing for details. Micro Chuck Mandrel Adapter Rotary Tool Mini Holder for Rotary Tools 1/8" Shank. Color: Black, Condition: New. Listed at 10.89 USD. MICRO CHUCK MANDREL - MININ CHUCK HOLDER ADAPTER FOR ROTARY HANDPIECE TOOL 0 - 1.00MM / 0 - 0.040" CAPACITY SHANK SIZE 2 STEP - 1/8" & 3/16" HOBBY & JEWELRY - ACCESSORY HOLDER Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Miniature MICRO 4 Jaw Chuck Mandrel adapter, with a holding capacity range of 0 to 1.00mm drills and accessories. (The 3rd and 8th pictures show the chuck holding 1 mm thick wire) Mandrel shank has two holding diameters (a 1/8" and 3/16" Shank), the main body portion measures 3/16" and the shank end is 1/8" adapter can be held at either diameter. Micro Chuck is machined out of one piece steel, with a tightening nut. Mandrel is like a miniature pin vise that mounts on rotary tools, hand-pieces like Foredom, Dremel, Grobet, Pfingst to hold Micro Drills, Mini Polishers. Micro Chuck Adapter is a handy accessory that can be used to hold very small bits, used in Hobby, Jewelry and Watch making and repair work. SPECIFICATIONS: JETS Product # 1301-70125 - Overall Length: 1-21/64" - 33.74mm - Shank 2 Position Holding Diameters: 1/8" - 3.17mm at the end of mandrel & 3/16" - 4.73mm just below the threads - Shaft Length: 11/32" - 8.00mm - Main Body Diameter: 3/16" - 4.73mm - Chuck Capacity: 5/128" - 0.039" - 1.00mm - Chuck Head Length: 5/8" - 15.8mm - Chuck Nut Knurled Diameter: 9/32" - 7.2mm - Chuck Nut Length: 3/8" - 9.8mm - Material: Steel Black Anodized Note: This is our value economical priced Micro Chuck ... you can see our US made item > eBay ID # 191457059630 NOTE: Visit JETS INC. ebay Store, where you can see various other types of Miniature Mandrels, Adapters, Chucks and Pin Vises and a wide range of many other Hand Tools and Supplies along with a selection of Jewelers Equipment Tools & Supplies. JETSINC. 1214 CKP 1E 4X-1E 15X-3E M P