Stainless 10-32 threaded rod and block assy, + shaft collars, 8-1/4" long, used

Here is one assembly, consisting of two 10-32 threaded rods or screws, two threaded blocks and two small shaft collars. The screws are 8-1/4" long, Stainless and slightly magnetic. Threaded length is 7-1/2", non threaded end is 3/4" long, .150 diameter. Also has a flat and very end is slotted. The blocks are just plastic, though unsure of exact material. They have one 10-32 threaded hole and other hole, not threaded, is app .190 diameter. On side, there are two 2-56 thread thru holes. The block is app 1-3/16 x 7/8 x 3/8 thick. The blocks had microswitches attached and top block or bottom block would be adjusted slightly up or down by turning the screws via shaft collars used on the non threaded ends. Includes two shaft collars with 2-56 cap screws. Not sure what you can use this for. This is a used assy. The parts were custom made so no mfg part # or packaging. A few minor blemishes from previous use. Free shipping via USPS 1st class package / box with tracking #. I have several of these available. If you have any questions, let me know please. Thanks.