... and 21mm Treatment:nickle plated head & zinc plated joint T-handle Spark plug wrench* Size:16mm and 21mm.* Material: carbon steel ... * Surface: polished, chromed plated or zincification.* The handle is in plastic dipped and any color is optional.* Packing ... , blister card, double blister card, or PVC polybag packing. T handle spark plug wrench 16mm 21mm