Description Product Reviews These blueboards make it easy to mount 66 blocks where no back board exists. 1/4 Blue Metal Backboard with (2) 89 Brackets 100-pair via two 66M1-50 blocks capacity backboard, equipped with two 89B brackets Accommodates (2) 66 M Blocks 10″ x 8.5″ R183C1 0 Reviews Hide Reviews Product Reviews