Our octagonal safety blocks are manufactured in Canada by VIT, from high-strength 6063-T5 aluminum. They are rated according to their length (up to 60") and whether fixed or adjustable. Safety blocks are placed between the Slide and Bolster of a press during maintenance and set-up, and must be rated to support the static weight of the Slide and any attached tooling. The load to be supported by a fixed block is determined by its series and length. Block holders and electrical interlocks are available.