MAKERLINK 90 Hidden Tee Nuts available (M5 Set Screws Included). Sold in Packs of 10 for your convenience. 

"These MAKERLINK 90 Hidden Connecting Tee Nuts, when used in pairs, make a strong and inexpensive 90 degree hidden connection system for V-Slot!"

 Product Details

• Qty. 10
• Mounts with M5 Set Screws (Included)
• Two per joint, used in parallel, create a rigid joint system
• Shiny Nickel Plated Steel
• Color: Silver

Properly space two Makerlinks using 13.2mm Aluminum Spacers for a nice strong connection system.

 OpenBuilds Part CAD Models and Drawings