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Tap & Die Set: #4-40 to 1/2-20 Taps, #4-40 to 1/2-20 Dies, NPT
Tap & Die Set: #4-40 to 1/2-20 Taps, #4-40 to 1/2-20 Dies, NPT Carbon Steel, Bright Finish, 1 & 5/8" Hex Dies, Plug, 76 Pc