The BOSCH line of countersinks are great for deburring and chamfering openings to pre-drilled holes. Great for electrical, plumbing and HVAC contractors. BOSCH countersinks cut varied materials cleanly and accurately. With standard high-speed steel and super hard titanium-coated bits, these countersinks perform great in even the toughest materials.
Hawera bits have steel bodies that are annealed to increase flexibility and reduce brittleness. Then they're shot peened to tension the surface and protect against breaking from twisting and torquing. All bits fall within 90-100-Percentage of I.S.O. standards.