Extruded and CNC-machined from 6061-t6 aluminum, box two stem spacer kits feature an ultra-minimalist design that is super lightweight. Weights range from 0.02 to 0.14 ounces (0.56 to 4 grams), depending on the size. For the best performance, stack the Spacers so the vertical supports are in alignment. Sold in packs of five, each set provides spacing adjustments from 1 to 20 millimeters.
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