This is a 3d printed Dial Indicator mount that fits on Mini Lathe Quick Change Tool Post. The problem with most dial indicator mounts for quick changes on a mini lathe is they don't have enough clearance to measure anything over 2.5". We designed this one to help fix this issue. This will fit any dial indicator with .375 shoulder on it which is very common. It will fit in any quick change tool post that has an .5" opening. When printing this .STL file we used PLA plus with 30% infill and have had great results in rigidity and has held up great. Will be printed in Grey PLA + The print will include all necessary hardware which is (1) 1/4-20 threaded insert and one 1/4-20 bolt. Does not come with Dial Indicator. Any other questions feel free to ask.