These are Original Hunterworks Can Am Rollers for the Two Roller style secondary clutches. Comes with Two Rollers and Two New Roll Pins Only Covered in a nano particle lubricant that will transfer to the helix and roller pin. Aerospace carbon composite plastic Ultra low friction bearing grade Thermal stability up to and beyond 300°C (572°F) HDT @1.8MPa 367°C (693°F) Melting temperature 373°C (703.4°F) Proprietary Industrial Heat treating 26 hour, 4 cycle heat treat for 2 stage crystal growth Cryogenic stress and fatigue relief Plastic properties are not achieved without proper heat treat and crystal growth. Most end-product manufactures do not heat treat, therefore their listed polymer specifications are incorrect. Both materials and manufacturing are Made in the USA!