The 3 piece set includes a table 4 by 4 by 2 ft. high; a ramp 4 ft long ; and a table that is 4 by 2 by 1 ft high. Basically, you can purchase either extra ramps and 1 ft. high table or just all ramps on 4 sides of the 2 ft. high table, or the same with all 4 tables. The tables are attached with nuts and bolts, and the ramp with hinges and rods to attach to 2 ft. table After unpacking, you will need to drill the holes to attach table to table with the nuts and bolts. Instructions are included. We will make the table top, but you will need to attach the legs and braces, again need to drill holes. The ramp will be complete and packed as whole.