Radius Marker, Small, 20 in Radius ORS NASCO A highly refined blend of A highly refined blend of aluminum Natural cotton canvas keeps hands cool and protected Knit wrist helps prevent dirt and debris from entering glove Clute cut provides a roomy fit Straight thumb increases comfort in closed fisted work PVC dot grip on palm the three smaller models will fit conveniently into a shirt pocket All have sturdy friction joints to maintain rigidity and accuracy 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