Features [Easy to use] The parallel pad can slide smoothly and is easy to adjust. [Good stability] The smaller parallel pads A, B and C are locked with one screw, while the larger parallel pads D, E and F are locked with two screws. [Free adjustment] Due to the adjustable characteristics of the adjustable parallel block, it can be adjusted to a precise size by micrometer measurement, and can replace multiple solid parallel pads. [Measuring range] The adjustment range of the 3/8 parallel block's wide range measurement is 3/8in~2-1/4in. [Multiple Uses] These parallel pads are as useful as gauges when checking the dimensions of slots and holes. Specification: Material:Steel Adjustment Range:3/8in~2-1/4in Package List: 6 x Parallel Block Package List