Features: Contains 4 individual barrel spacers made from stainless steel Made for the BRS Replicant Description: BRS was founded by balisong users for balisong users. This barrel spacer kit is made for the Replicant, allowing you to personalize and customize your favorite butterfly knife. This kit features four individual barrel spacers made from stainless steel. Keep in mind that these spacers are product specific for existing balisong that currently have slab style spacers. They do allow for a lot of different feels to your flipping experience, and can be mixed and matched to suit your preferences. Did you know the history of butterfly knives is still unclear? Some oral histories trace these knives back to the Philippines as early as 800 AD, but other records claim the balisong originated in France. No matter where it came from, butterfly knives are a blast. If you're starting out with a trainer blade or ready for the sharp stuff, we've got the balisong for you at Blade HQ.