Tornillos y tuercas de palometa Pearl
Pearl UGN-6-2 UltraGrip wing nuts M6 (set of 2).
With this set of replacement Pearl M-8RN knurled round nuts you'll always have some spares, should some of the little blighters go missing.
This is a 2-pack of Pearl UGB-620 UltraGrip wing bolts, size: M6 x 20 mm.
The Pearl MWT-12-12 is a 12-pack of metal washers for tension rods.