Thread Insert Kit Number of Inserts 6 Number of Pieces 8 Insert Diameter 29/64 in Insert Length 1/2 in Internal Thread Size 1/4 In.-28 Thread Direction Right Hand Thread Type Fine Insert Material Brass Finish Plain Material Grade/Class C3604 Drive Type Slotted Compatible Material Wood Drill Bit Sizes Included 25/64 in Minimum Material Thickness 1 in Maximum Hole Diameter 0.391 in System of Measurement Inch Manufacturer Location Globally Sourced