Rivet Nut Tool Tool Type Hand Installation Tool Compatible Thread Size #10-24 #6-32 #8-32 1/4 In.-20 Mandrel Sizes Included #10-24 #6-32 #8-32 1/4 In.-20 Material Aluminum Steel System of Measurement Inch Compatible Insert Type Rivet Nuts Grip Material Plastic Includes (4) Mandrels