1/4 To 1/2 UNC HSS 5 PC Die Set • Available in HSS and Carbon Steel • Various set configurations in UNC, UNF, BSW and BSF thread styles List Number TA18921 Substrate HSS Surface Treatment Bright Package Quantity 1 Includes UNC 1/4, 5/16, 3/8, 7/16, 1/2 Case Type Plastic SKU: TA18921 Category: Die Sets Related products 1/4 To 1″ UNC CARBON 7 PC Die Set Item #: TA18823 1/4 To 1″ BSF CARBON 7 PC Die Set Item #: TA18813 1/4 To 3/4 BSW HSS 7 PC Die Set Item #: TA18902