![1](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)
Specification:
Weight: approx. 9-229 g / 0.3-8.1 oz. Material: Carbon steel (zinc plating colour), inner M2 x 0.4 outer M4.5 x 0.5: 6 mm / 0.2 in. Inner M4 x 0.7 outer M6.5 x 0.75: 8 mm / 0.3 in. Inner M3 x 0.5 outer M5 x 0.5: 6 mm / 0.2 in. Inner M5 x 0.8 outer M8 x 1.0: 10 mm / 0.4 in. Inner M6 x 1.0 outer M9 x 1.0: 12 mm / 0.5 inches. Inner M6 x 1.0 outer M10 x 1.5: 14 mm / 0.6 in. Inner M8 x 1.25 outer M12 x 1.5: 15 mm / 0.6 in. Inner M10 x 1.5 outer M14 x 1.5: 18 mm / 0.7 in. Inner M12 x 1.75 mm. Outer M16 x 1.5: 22 mm / 0.9 inches