1、[Height Adjustment] This set includes 4 engraver risers, each with a height of 50mm, stackable for a maximum height extension of up to 200mm, allowing for customized height. 2、[Sturdy Aluminum Alloy] Constructed from aluminum alloy material, these engraver raisers are sturdy, reliable, and provide stable support for engraving machines. 3、[Non Slip Base] The non slip plastic base enhances stability, ensuring a secure and reliable support for the engraving machine during operation. 4、[Wide Compatibility] These support columns are compatible with 2020 aluminum frame engraving machines on the market, suitable for most engraving machines. 5、[Multiple Uses] These engraver raisers can be used in conjunction with rotating drums for engraving on cans, wine glasses, and other cylindrical objects.