Igaging® 15 pieces precision setup blocks set features ul style 'margin-top 0px; padding-top 5px; padding-bottom 5px;' includes 15 most popluar sizes for machine setup solid aluminum with blue anodized finish for long lasting scratching protection cnc precision machined block thickness accuracy 0.001"/0.025 mm block size 3" long x 1/2" thick engraved scales on one side and bottom of the 1" x 2" x3" bar in 1/32" increments designed in igaging in california supplied in fitted protective case