Self-Locking Insert Kit System of Measurement Metric Insert Diameter Not Applicable Internal Thread Size M3-0.50 M4-0.70 M5-0.80 M6-1.00 M8-1.25 Thread Direction Right Hand Thread Type Coarse Overall Length 6.5 mm 7.5 mm 10.5 mm 12.5 mm Number of Pieces 50 Number of Sizes 5 Material Steel Material Grade/Class 12L14 Finish Plain Wall Type Heavy Wall Compatible Material Metal Manufacturer Location Made in USA Drive Type Slotted