Legs

1/4" thick x 2" x 2" steel square tube, 4 lengths of 48"

Pictures here

Leg Holders

3/16" thick x 2.5" x 2.5" steel square tube, 8 lengths of 6"

3/4" Nuts and 1.5" long Bolts, 8 pairs

3/16" thick x 2.5" x 2.5" steel square tube

1/4" thick x 8" x 8" steel plate

3/4" Nuts and 1.5" long Bolts