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).
Tesla Model S Wiper Linkage Replacement Bushings
Wiper Linkage Fits TESLA Model S 12-16
4x Tesla Alloy Cap Wheel Centre Caps 56mm Fit Tesla Model S X 3 Y Grey Silver
4x Tesla Alloy Cap Wheel Centre Caps 56mm Fit Tesla Model S X 3 Y Black Silver
4x Tesla Alloy Cap Wheel Centre Caps 56mm Fit Tesla Model S X 3 Y Black Red
AIR SUSPENSION COMPRESSOR PUMP FOR TESLA MODEL S MODEL X 2012 ONWARDS 68041137AF