MINI MANDREL CHUCK ADAPTER ROTARY TOOL MICRO HOLDER for DREMEL FOREDOM 1/8 SHANK (E 1) MINI MANDREL CHUCK ADAPTER ROTARY TOOL MICRO HOLDER for DREMEL FOREDOM 1/8 SHANK MINI MANDREL - MICRO CHUCK ADAPTER FOR ROTARY HANDPIECE TOOL 0 - 0.90MM / 0 - 0.035" CAPACITY SHANK SIZE 2 STEP - 1/8" & 3/16" HOBBY & JEWELRY - ACCESSORY HOLDER Miniature MICRO 4-Jaw Chuck Mandrel adapter, with a holding capacity range of 0 to 0.90mm accessories. 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 precision 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. This is made in USA