Check the listing for details. (10) DoAll Rectangular Gage Blocks: 0.040 PNF606NEW!!. Condition: New. Listed at 75.00 USD. This set of (10) DoAll rectangular gage blocks is a top-quality addition to your metalworking inspection and measurement toolkit. Precision-engineered to a size of .04, these blocks come in a rectangular shape, making them perfect for a wide range of applications. The brand name DoALL is well-known and respected in the industry, providing peace of mind that you are investing in a reliable product. Whether you are a seasoned metalworker or just starting out, these gage blocks offer exceptional value and performance. The blocks are new and unused, ensuring that you receive a product in pristine condition. With their versatility and precision, they are an essential tool for anyone looking to take their metalworking projects to the next level.