MBS SHOP › 12387-B - Hub / Axle Spacer - 12mm x 16mm (ea.) Image 1 of 1 12387-B - Hub / Axle Spacer - 12mm x 16mm (ea.) $0.95 These spacers fit on your axles between the hub the hanger.12mm Inner Diameter. 16mm Length.Anodized Aluminum Get notified by email when this product is in stock. Sign up to receive news and updates. Quantity: Add To Cart Added! These spacers fit on your axles between the hub the hanger.12mm Inner Diameter. 16mm Length.Anodized Aluminum