Dormer E711, Plug Tap, 1/4in. 18 Npt, Interrupted Thread, High Speed Steel, Bright

Bright finish - prevents work piece material from sticking to the cutting edge Premium HSS material - high speed steel provides superior performance and extend tool life Straight flute - designed for efficient threading of through and blind holes ANSI Standard - manufactured conforming to the American national standard institute Interrupted Thread - designed to reduce the force required when tapping many materials including steel, aluminium, stainless steels and cast iron