Dormer 5978829 Adjustable Tap and Die Set, 13 Pieces, 1/4-28 to 1/2-20 Tap Thread, 1/4-28 to 1/2-20 Die Thread, UNF Thread, Round Die

Dormer Tap and Die Set, Adjustable, Measurement System: Imperial, 13 Piece, 1/4-28 to 1/2-20 Tap, 1/4-28 to 1/2-20 Die Thread, UNF Thread Standard, Round Die Shape, Bottoming/Plug/Taper Tap Chamfer, HSS Tap, HSS Die, Bright Tap, Metal Case Package Type, Adjustable Die: Yes