Pyramid

Pyramid Plastic   Synthetic
A B C   V X XV ZI   SP SV SX SJ
1/4˝ 1/4˝ 1/4˝   S S  
3/8˝ 3/8˝ 3/8˝   S   - - - -
3/8˝ 5/8˝ 3/8˝     S
1-5/8˝    
1-1/2˝