Knife Thread Insert System of Measurement Metric Insert Diameter 12.7 mm Overall Length 15.875 mm Internal Thread Size M8-1.25 Thread Direction Right Hand Thread Type Coarse Material Stainless Steel Material Grade/Class 18-8 Finish Plain Drive Type Slotted Drill Bit Size 33/64 in Compatible Material Wood Minimum Material Thickness 19 21/32 mm Maximum Hole Diameter 13.106 mm Compatible with Manufacturer Model Number DT-M8 Installation Method Drive Tool Screwdriver