... inside diameter): Φ14mm, Φ20mm, Φ25mm, Φ30mm6)Color: O=orange, B=black, G=greydigital indicatorSANKQ specialized ... in manufacturing professional with woodworking machine accessories more than 10years.such as ... with gauge, dial , handwheel , hand wheel with indicators, indexing plunger, universal joints and chains. Mechanical position indicator with Orange color ...