Extruded and CNC-machined from 6061-T6 aluminum, the BOXZero Stem Spacersfeature 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.Sold in packs of five, including two 1-millimeter and one each 3-, 5- and 10-millimeter heights, the set provides spacing adjustments from 1 to 20 millimeters.Available in anodized Red, Blue, Gold and Black to fit 1” and 1 1/8” forks. For the best performance, stack the spacers so the vertical supports are in alignment. Maximum recommended user weight is 120 pounds.Weight:1”-6.7 grams/0.23 ounces1 1/8”-8.2 grams/0.28 ounces This item is sold by SDJ Sports, a business located in the UK and import duty/gst may apply. Please check http://trade.me/whatsmyduty for more.