Dynamic Friction 340-21020 DFC Disc Brake Hardware Kit Dynamic Friction 340-21020 Disc Brake Hardware Kit Disc Brake Hardware Kit FEATURES: Corrosion Resistance Easy Assembly & Removal High Heat Resistance Chemical Resistance Low Coefficient Of Friction SPECIFICATIONS: California Proposition 65: This product contains Antimony Oxide and other chemicals which is known in the State of California to cause cancer ( or reproductive problems).