Workshop, tool box accessory for quickly sorting out mixed grease nipple fittings.SpecificationsThread TypeSizeNPT1/8“1/4“3/8“MetricM6 x 1M6 x 0.75MetricM8 x 1M8 x 1.25MetricM10 x 1M10 x 1.5BSPT1/8“1/4“UNF/ANF1/4“5/16“3/8“BSW1/4“5/16“1/2“3/8“BSF3/16“1/4“5/16“