Our acrylic mounting blocks are high quality. 

1/2 inch (1cm) thick,  Rounded edges and corners. 

2.5" x 1." $1.50	2.5" x 2.5" $2.90	3.0" x 3.0" $3.75	6.5" x 2.0" $4.75
2.5" x 4.5" $4.25