Holemaker Step Drill Straight Flute 6-30mm TTBS29-31P This is a quality drill

This is a quality drill bit with high performance in brick and concrete

Soft start feature gradually increases speed to eliminate start up shock

Tips are solid copper

- New ultra compact protective Hi Viz rubber case

Holemaker Step Drill Straight Flute 6-30mm TTBS29-31P This is a quality drillSTRAIGHT FLUTE STEP DRILLS The Titanium Nitride coating significantly increases thetool life by providing the following benefits: Increases surface hardness to 85HRC Ceramic surface reducing friction by up to 30% Especially resistant to cold welding. Suitable for cutting a wide range of materials. Sizes Included: 6 8 10 12 14 16 18 20 22 24 2628 30mmStep Length: 3. 75mmOverall Length: 97. 0mmShank: 10mm