Setting Tool Tool Type Thread Setting Tool Compatible Thread Size 1/4 In.-20 M10 3/8 In.-16 5/16 In.-18 M6 M8 Compatible Rivet Nut Body Type Bulbed Hex Round Compatible Rivet Nut Material Aluminum Steel Mandrel Sizes Included 1/4 In.-20 Material Aluminum Alloy Overall Length 18 in System of Measurement Inch/Metric Compatible Insert Type Insert Nuts Includes 1/4 In.-20 Mandrel 1/4 In.-20 Nosepiece Service Wrench Small Rule Nosepiece Sizes Included 1/4 In.-20