the top box is E55 givi side boxes E 360 1/2 " tubing for braces kappa M3 /k553 top plate for three boxes mount is 3/16 " plate alum. home made ,. powder coat mat black to match boxes ,elec. box connectors by givi, elec. led kits by admore,. wil be finished next week , I hope,. de dee joe goulet 79 and still riding