Rivet Nut Tool Tool Type Hand Installation Tool Compatible Thread Size #10-24 1/4 In.-20 3/8 In.-16 5/16 In.-18 Mandrel Sizes Included #10-24 1/4 In.-20 3/8 In.-16 5/16 In.-18 Material Aluminum Steel System of Measurement Inch Compatible Insert Type Rivet Nuts Grip Material Rubber Includes (4) Mandrels Nosepiece