Arithmetic Bead String
red/white with 100 balls
Arithmetic String (approx. 150 cm) with 100 balls in a step of 10 on a tearproof, stretchable string. The balls are made of RE-Plastic® (Ø 1cm). When pulling the string, the slight ball lock lifted and all beads slide back together again.
Packed in polybag.
dimensions: 15 x 10 x 1cm
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