These heavy duty mounting plates are perfect for any project requiring connection strength
Attach various pieces of 20mm slotted aluminum extrusion together with this 5-hole T-shaped plate.
Measures 60mm long x 60mm wide, 4mm thick. 5.3m drill holes 20mm apart
so you can use M5 screws. You'll want to use 10mm long screws to attach this to 20mm extrusion.