BEILI TOOLS HSS M35 Cobalt Twist Drill Bits, Pack of 10 (4.0mm, 5/32");

Specially designed for drilling in hard steel,thick web helix delivers fast material removal combined with increased durability for maximum officiency and performance.
Each bit is manufactured to exacting specifications and features a split point that starts on contact with no walking or skating,eliminating the need for a center punch.

Product Details:
Diameter:   5/32 inch
Flute length: 1.69 inch
Total length: 2.95 inch
Material: 5% Cobalt
Package: Plastic box

Drilling Reference:
Material: Automobile leaf spring steel plate
Drilling Speed(r/min): 690
Feed rate(mm/r): 4
Drilling depth: 10mm
Holes: 8