Spring Nut Setter for Stainless Nut Hex nut setter 45mm 65mm Spring Nut Setter for Stainless Nut S.A.E and Metric Size both available6150-Chorme Vanadium Steel, 52 HRCSpec. Overall LengthSize45mm6,7,8,9,10,11,12,13; 1/4" 5/16" 3/8" 7/16"65mm6,7,8,9,10,11,12,13; 1/4" 5/16" 3/8" 7/16"Nut Setter Series:magnetic nut setterspring nut setter for stainless nut Spring Nut Setter for Stainless Nut