Self Locking Thread Insert, Compatible Material Metal, Compatible Tap Size M24- 3.00, Drill Bit Size 21 mm, External Thread Fit 6G, External Thread Size M24- 3.00, Finish Black Phosphate, Insert Diameter 24 mm, Internal Thread Fit 6H, Internal Thread Size M16- 2.00, Material Steel, Material Grade/Class 12L14, Maximum Hole Diameter 21 mm, Minimum Installation Depth 24 13/64 mm, Overall Length 20 mm, System of Measurement Metric, Thread Direction Right Hand, Thread Type Metric, Wall Type Heavy Wall. This item has been restricted from sale in the following state (s): []