Knife Thread Insert System of Measurement Metric Insert Diameter 6.35 mm Overall Length 9.525 mm Internal Thread Size M4-0.70 Thread Direction Right Hand Thread Type Coarse Material Stainless Steel Material Grade/Class 18-8 Finish Plain Drive Type Slotted Drill Bit Size 17/64 in Compatible Material Wood Minimum Material Thickness 10 9/64 mm Maximum Hole Diameter 6.756 mm Compatible with Manufacturer Model Number 500-1 Includes (10) Threaded Inserts Drill Drive Tool