Box One Alloy Cassette Spacer Kits

Extruded & CNC-machined from 6061-T6 aluminum alloy, Box One Cassette Spacer Kits feature a super lightweight minimalist design and provide anywhere from 1 to 10 millimeters of spacing adjustment. They are compatible w/ Box One (aka Harmonic), & Box Three Pro & Mini hubs. Sold in packs of four.

Each pack includes the following spacers:

• (2) one millimeter
• (1) three millimeter
• (1) five millimeter