Sealey HSS Cobalt Fully Ground Drill Bit Set 19pc Features: Fully ground HSS with 5% Cobalt makes these ideal for drilling extra hard materials. 135° Split point tip enables bits to bite workpiece quickly, reducing the need for centre mark. Drills can be resharpened without affecting their performance. Supplied in metal storage case. Technical Details: • Fully ground HSS with 5% Cobalt makes these ideal for drilling extra hard materials. • 135° Split point tip enables bits to bite workpiece quickly, reducing the need for centre mark. • Drills can be resharpened without affecting their performance. • Sizes: Ø1-10mm in 0.5mm increments. • Supplied in metal storage case. • Model No. AK4701 • Model No. AK4701 Additional Information: • Fully ground HSS with 5% Cobalt makes these ideal for drilling extra hard materials. • 135° Split point tip enables bits to bite workpiece quickly, reducing the need for centre mark. • Drills can be resharpened without affecting their performance. • Sizes: