These Universal Mounting Plates make it easy to mount wooden table legs! They are perfect for Dining Table, Coffee Table, End Table and Bench Projects.We use these Universal Mounting Plates to attach these U Legs and X Legs. Universal mounting Plate specs:Size: 4" Wide by 6" Long by 3/16" ThickCenter holes: 15 holes at 3/8" diameterPerimeter Slots: 16 Slots at 5/16" wide by 5/8" longFinish: Powder Coated with Sandtex Black What's Included:Starter Kit:- Four 4" by 6" Powder Coated Universal Mounting Plates- 1 Mounting Plate Router Template (Clear Acrylic)- 16 M6 Inserts- 16 M6 25mm long BoltsPair of Universal Mounting Plates:- two 4" by 6" Powder Coated Universal Mounting PlatesMounting Plate Router Template:- one Mounting Plate Router TemplateM5 Hardware Kit- 16 SK M5 Inserts- 16 M5 25mm long boltsM6 Hardware Kit- 16 SK M6 Inserts- 16 M6 25mm long bolts