They are made of PB1 brass machined to fit Tesla Model S wiper linkage (see photos). Suitable grease (for the inside of the bushings once installed).
Wiper Linkage Fits TESLA Model S 12-16
GEARBOX OIL FILTER SERVICE KIT FOR TESLA MODEL S MODEL 3 MODEL Y MODEL X
GEARBOX OIL FILTER SERVICE KIT 3L OIL FOR TESLA MODEL S MODEL 3 MODEL Y MODEL X
1Pc Jack Pad Adapter Rubber Lifting For Tesla Model S Model X Model 3 AUTOXBERT
2x Track Tie Rod End Front Outer for Tesla Model S 5YJS Model X 5YJX 102784100B
2x BREMBO Brake Discs Pair For Rear Internally Vented Fits Tesla Model S Model X