Running below the optimum speed will cause chipping
Black finish tools are generally recommended for ferrous applications where the oxide layer aids chip flow and heat dissipation
E-Z Chamfer efficiently removes burrs and ridges from bolts
Screw Extractor 10 Piece Set Nos 1-5 & Left Hand Stub Drills
Solid centre design provides increased bit rigidity
16-60mm 11 Pce Tradesman's Hole Saw Kit with Bonus 12 Pc Jobber Drill Set Running below the optimum speed16 60mm 11 Piece Tradesman's Hole Saw Kit Tradesman's Hole Saw Kit 11 piece hole saw kit containing Cobalt Bi metal edge 1 piece saws with 48mm cutting depth.(16, 20, 22, 25, 32, 40, 51, 54, 60mm) Bordo bi metal hole saws are premium quality, general purpose saws suitable for a wide variety of materials and applications. The high speed steel cobalt (HSS Co) cutting edge provides shock resistant teeth and resists tooth strippage. 4 6 positive tooth