These 3/8″ round, extra-fine Cratex sticks consist of tough, resilient, rubberized abrasive utilizing approx. 240 grit silicon carbide as the abrasive grain in a premium grade, oil-resistant chemical rubber. Its unique cushioned action allows the abrasive grains to cut freely, smoothly and softly without gouging or digging into the work surface. Ideal for work on jewelry, plastic parts, small castings and models. Cratex sticks are sold individually.  Measure 6″ long.  Made in Mexico.