Check the listing for details. iGaging Precision Setup Block Set - 15 Piece. Condition: New. Listed at 101.98 USD. iGaging Precision Setup Block Set - 15 Piece, 181123, SOLID ALUMINUM CONSTRUCTION with laser engraved black anodized finish will not damage tool or bit edges, SUPPLIED WITH A MOLDED BLACK protective case with foam lining, BLOCKS MAY ALSO BE STACKED together to combine measurements, INCLUDES 15 SETUP BLOCKS - Measuring: 1/16", 3/32", 1/8", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", 7/16" 15/32", 1/2", 23/32", 3/4" and 1" x 2" x 3", This Precision Machined Setup Block Set can be used throughout the woodshop to accurately set bit or blade height, as well as fence position. 15/32" and 23/32" blocks may be used for checking dado width to accommodate common plywood thicknesses. Blocks may be also stacked together to combine measurements. Aluminum setup blocks will not damage tool or bit.