These are standard 20mm x 20mm x 17mm (with a 4mm wide T-slot tab) and is used to connect (2) V-Slot or 20 Series T-slot aluminum extrusions together for a 90 degree connection. NOTE: Since the cast corner brackets have stand off teeth (for locking in the slot) in one direction you use 10mm Low Profile Screws and for the flush mount direction you use the 8mm low profile screws along with the M5 Tee Nuts Unsure which products are compatible with our aluminum extrusions? Look for the Maker Store Compatibility Badges! The badge above indicates that this product is compatible with our 20 Series Hardware
