Metal Riser Block for telescope refractor rings is constructed from aluminum alloy, offering a lightweight and sturdy design. Features built-in grooves for secure mounting on dovetail rails; aluminum material provides durability and reduced weight. The riser block elevates the telescope, increasing clearance above the dovetail bar and helping balance the system on the mount. Equipped with M6 and 1/4" threaded holes to accommodate standard screws. Includes both M6 and 1/4" long and short screws for compatibility with telescope rings and dovetail plates from various brands. Dimensions: 1.9cm x 2cm x 3.6cm (0.75in x 0.79in x 1.42in). Package includes: 1 riser block, 2 screws. Note: Slight variations of 1-2cm (0.39-0.79in) may occur due to manual measurement.