Self-Locking Insert Kit, System of Measurement Inch/Metric, Insert Diameter Not Applicable, Internal Thread Size M10- 1.50, M12- 1.75, M6- 1.00, M8- 1.25, Thread Direction Right Hand, Thread Type Metric Internal/UNC External, Overall Length 10.3 mm, 12.3 mm, 13.1 mm, 16.7 mm, Number of Pieces 36, Number of Sizes 4, Material Steel, Material Grade/Class 12L14, Finish Plain, Wall Type Heavy Wall, Compatible Material Metal, Manufacturer Location Made in USA, Drive Type Slotted. This item has been restricted from sale in the following state (s): []