Multiple Size: Set up gauge blocks are all 7cm/2.8 inches long, size: 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", 1x2x3". You can choose the right gauge block to meet your different working needs. Material: 15pcs of solid aluminum structure anodized to prevent damage to milling cutters and saws. They are , can be used for a long time, and can be used for sizes or on their own. High Precision: Gauge blocks are all marked with precision engraving, which is easy to read and accurate. You can quickly work on the table saw without guessing and measuring. Easy To Use: 15pcs Solid Aluminum height measuring devices of different sizes can easily set the height of the fence and the cutter according to the needs, which is faster and more accurate than using a combined ruler. Wide Application: The 15 piece gauge block set allows you to easily adjust the fence and cutting heights. They are widely used for the router, table saw, and other woodworking areas., Manufacturer: CFWWSAQ