A stack of Sleek Mechanical Parts!
Sleek Mechanical Parts are a crafting material. Can naturally be looted from toolboxes, crates/boxes, and any mechanical object. Sleek Mechanical Parts alternatively can be found from destroying mechanical objects in Canny Valley (58+power level), and Twine Peaks. They are used to craft Tier 4 weapons.
After purchase don't forget to open up a live chat to collect your items. You can do this in the bottom right corner of any page.