Series A777 HSS-Co heavy duty jobber drills are ideal for applications where more heat is generated, such as machining higher tensile materials. Their high-speed steel/cobalt construction makes them durable even when working in tough conditions. Features and Benefits Excellent for drilling higher tensile, tougher materials 135 split point for improved precision and finish (over 1.5mm) Typical Applications Drilling Alloy steel Tempered steel Hardened steel Malleable cast iron Titanium Nickel alloy Aerospace Standards Manufactured to BS 328, DIN 338.
