Thread Insert Kit Number of Inserts 10 Number of Pieces 12 Insert Diameter 21/64 in Insert Length 3/8 in Internal Thread Size #6-32 Thread Direction Right Hand Thread Type Coarse Insert Material Brass Finish Plain Material Grade/Class C3604 Drive Type Slotted Compatible Material Wood Drill Bit Sizes Included 17/64 in Minimum Material Thickness 3/4 in Maximum Hole Diameter 0.266 in System of Measurement Inch Manufacturer Location Made in USA