Kerf Mount Corner Brackets for Table Aprons-Kerf Mount | Rockler Woodworking and Hardware
Kerf Mount Corner Bracket- Set of 4 | POWERTEC Cabinet Hardware, Shelf Hardware Accessories Wholesaler
Surface Mount Corner Brackets for Table Aprons, 2" (51mm) High x 4-3/4" (121mm) Wide
Source Heavy duty Table Leg Bracket Fixing Corner Bracket on m.alibaba.com
Corner Leg Bracket F4100
Amazon.com: POWERTEC 71670 Kerf Mount Corner Bracket, Corner Braces for Table Aprons and Table Legs (No Mounting Hardware), Set of 12 : Tools & Home Improvement