[Features]-Ideal for OP type plastic molds and lot management of molded products. - It is a product for embedding in a plastic mold. ●The date display can be changed with one touch from the inside of the mold. (Just turn the arrow part with a screwdriver) Uses a ball plunger for indexing. Compared to O-rings, the positioning (arrow indication) accuracy is improved, and the gas generated during processing and high temperature resistance are outstanding. ●We accept orders only for inside arrows due to the annual changeover of the YM type. ●As a special order item, the NM type can be engraved as desired. (Division is divided into 12 equal parts)