Hayes Brake Insert & Olive Kit The Hayes Brake Insert & Olive Kit is a simple way to make installation, servicing, or shortening of your Hayes hydraulic brake line quick and easy. The single-use inserts and olives are designed to create a secure interface between the hydraulic brake line and the caliper/lever of current Hayes hydraulic brake systems. Trimming a brake line a bit shorter? Installing a new system? Just want to have some spares on hand? This kit is for you. Features Original Hayes equipment for verifiable quality and compatibility Hose insert and olive kit for shortening, installing, or servicing select Hayes hydraulic braking systems Compatible with all current Hayes braking systems refer to your specific brake before ordering | Hayes | Brake Insert & Olive Kit 2 Pack