Perfect option for damaged or seized M8 chain adjusters Use to drill out the previous adjuster screw and/or clean out damaged threads Proprietary adjuster screws double as a tap Kit Includes: 2x Tapping Chain Adjuster Screws 2x Jam Nuts 1x Drill Bit 1x Anti-Seize Packet Tools required to adjust new chain adjusters are 10 mm and 13 mm wrenches. -