Staedtler Bead Roller (Round, Oval & Bicone)

Dimensions to be made beads/shapes:
Round bead with a diameter of 10 mm.
Oval bead 8 mm. x 16mm.
Bicone shape of 12 x 12 mm.

How does it work:
Place a piece of polymer clay in the beadroller in the appropriate ledge and slide the two parts (top and bottom) back and forth. At a certain point you see the shape emerge.