Astmeliste puuride komplekt 4-32 mm / 1/4" HEX kuuskantsaba

Product description
Set of 3 step drill bits adapted for drilling in various types of steel, non-ferrous metals, plastics and wood. They enable drilling precise holes. They can be used in tinsmith services, car workshops or in installers and electricians work. For professional use.

Characteristics

• made of hardened high speed steel HSS 4241;
• special coating of titanium nitride increases durability and extends the usage time 4 times;
• precise, high speed drilling;
• untwisted and thicker core ensures resistance to cracking during operation;
• diameter: 4-12 mm, 4-20 mm, 4-32 mm;
• number of steps: 5 (4, 6, 8, 10, 12 mm), 9 (4, 6, 8, 10, 12, 14, 16, 18, 20 mm), 15 (4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32 mm);
• two straight cutting grooves enable two times faster and smoother cutting due to effective removal of swarf and heat dissipation;
• they reduce the risk of overheating;
• 1/4” HEX drive enables quick and reliable seating in drills as well as drill-drivers or adaptors;
• point angle of 118◦ and the conical shape of the drill – they do not require prior drilling or marking drilling points;
• auto-deburring - automatic deburring and edge smoothing during drilling eliminates the need to process the hole manually;
• made in accordance with DIN 1412C standard;
• maximum material thickness is 4 mm;
• markings on the surface of the drill enables controlling the correct diameter of the hole to be made.