A set of three high speed steel stepped drills titanium nitride coated for increased wear resistance. They will produce precise parallel-sided holes in sheet metal, fibreglass and sheet plastic to a maximum thickness of 4mm. Size range covered is 4-12mm x 2mm, 3-12mm x 1mm and 6-20mm x 2mm. All three drills have 1/4" hex shanks.
8 April 2014
Excellent bits!I bought a set of these to drill through plywood and solid wood drum shells and they do the job perfectly with little or no tear out when the drill exits the back of the material. I know they are designed for use on sheet metal or plastic rather than wood, but they are great for wood as well!
31 March 2014
Very good value for moneyHave used these a lot over the last 18 months cutting plastic, aluminium and steel boxes. They have been very good, only thing I would advise is use cutting oil, they'll last and perform well, mine still have plenty of life in them.