Aluminum Channel 6063 .75" x .75" Sharp Corner x 60",x 60" Aluminum Channel 6063 .75" x .75" Sharp Corner, Shape: Channel, Material: Aluminum,Alloy: 6063, Free shipping service Free Delivery and Returns Best value for high quality 100% Authentic members get free shipping every day. Corner x 60" Aluminum Channel 6063 .75" x .75" Sharp.