Check the listing for details. Lathe Magnetic 3/8" Indicator Tool Holder (Indicator not INCLUDE). Condition: New. Listed at 24.95 USD. MADE IN USA!!!! ***MOUNT ONLY - DOES NOT INCLUDE DIAL INDICATOR!! Incredibly handy! Can be used on MOST tool posts!You will LOVE how convenient this holder is!Easy ON and Easy OFF and "Easy store on metal surface on lathe"! Works on Quick Change Tool Post! ANY POSITION!Convenient storage! MAGNETIC!FAST ATTACH!SOLID!ADAPTIVE!Attached using 4 (four) high powered Neodymium Magnets!Unbelievable magnetic attachment STRENGTH!But... still easy to slide into position.Positioning LIP helps find that "perfect" position! High resolution 3d-printed (Made of Polylactic Acid, a thermoplastic polymer) Dial Indicator Mount. (MOUNT ONLY - DOES NOT INCLUDE DIAL INDICATOR!!) Strong magnets allow attachment to any flat surface.Positioning LIP holds holder firmly.Convenient thumbscrew adjustment/changing of Dial Indicator. Maximum 3/8" diameter Dial indicator probe.Up to 2- 3/8" dial indicator diameter size.Good rigid construction. MOUNT ONLY - DOES NOT INCLUDE DIAL INDICATOR!! These are HIGH QUALITY holders. Thanks for looking!