Radius Markers, X-Large, 100 in Circumference

Features: Precision tools made of rust proof aluminum and anodized for lasting protection | The arms are precisely aligned with spring tension joints to guarantee accuracy and rigidity | The holder accommodates flat or round soapstone and pencils | All are a folding type design, the three smaller models will fit conveniently into a shirt pocket | All have sturdy friction joints to maintain rigidity and accuracy