This is an end cap for 1020 series t-slot aluminum extrusion rail. The two pegs fit into the round holes in the end of the rail and the body of the end cap safely covers the end of the rail without extending over, so it is perfect for tight clearance spaces. The end cap is 4mm thick, so it also doesn't add much length to the end of the rail.
Models for other rail sizes are also available:
2020 (2"x2"): https://www.printables.com/model/1011298-2020-aluminum-t-slot-rail-end-cap
Print Settings (PLA 1.75mm):
Nozzle: 0.4mm
Layer Height: 0.2mm
Infill: 15%
Walls: 3
If you have requests for fixtures like this that you would like to see, feel free to reach out. I am always open to working on new designs.
The author marked this model as their own original creation.