Presto M3 x 0.5 Taps Choice of First, Second And Plug

Quality High Speed Steel as you would expect from Presto Tools

Used for cutting internal threads, 

Straight Flute full size taps used as machine taps

Hand tap sets for tapping in free cutting steel upto 800N/mm2.

The perfect form thread is generated by a combination of effective pitch diameter,

Major diameter and chamfer length

Choice of First, Second, Plug and set of three. Just pick from the drop down.