Ball bearing Delta hinge.
Double ball bearing spring suspension.
Ball bearing axle and stick unit.
Single post slave pedal.
Precision cardan shaft.
Laterally accessible hoop fixing.
Two way beater felt/plastic.
Infinitely adjustment between round and eccentric gearwheel.
Including hard nylon bag.
Tri Pivot hoop clamp.
Floor plate with anti-slip rubber.
Longboard.