This set includes three square, brushed metal-look acrylic risers. All risers are 1/8" thick and are staggered in sizes 3", 4", 5", and 6". 

Sizes are: 

3 x 3 x 3

4 x 4 x 4

5 x 5 x 5

6 x 6 x 6

You get all 4 risers!