2 pieces of round wood made of solid beech (124 x Ø30mm, with Ø5mm hole on both sides),
can be used as a rope/package tape guide or as a roller/tyre,
plus a threaded rod M5 x 160 mm with two wing nuts (for clamping the rollers between two base blocks, each galvanized, according to DIN 976 and DIN 315),
as well as a multi-purpose rubber (natural, 90 x 6 mm, high elasticity).
