Precision slide bearing, from superstrong plastick KETRON PEEK HPV.
This plastick have only 15% more friction coefficient when Teflon!
But this plastick have more than 20-th time strongest when Teflon.
One boat life: one slide bearing!
ID 2.02 mm
OD 4.00 mm
Flange diameter: 6.0 mm
Long: 7 mm.