Printed on my 3D Printer with PETG Filament, these are resistant to most milling chemicals and are extremely durable. Great for supporting long or odd shaped material on your mill bed or vise. The have strong 12mm Neodymium magnets in the base to hold them from vibrating on your mill table. They are adjustable from 1-3/8″ to 2-1/8″ in height. A set of two comes with a Stainless Laser-Cut 9/16″ open end wrench for easy adjustment in tight quarters.
Also, these work great on the GlowForge Laser with the crumb tray removed. The floor the magnets stick to and can hold odd parts well.