



SI29COTP | Alpha Cobalt Imperial Tuffbox Pro Drill Set (29 Piece)
The Alpha SI29COTP Tuffbox Pro Set features heavy-duty Cobalt drill bits designed for the toughest materials, including stainless steel, cast iron, and high-tensile steel. The innovative "Tuffbox Pro" case includes strong hinges that allow the bit holders to stand upright for easy access, along with a rugged latch for worksite security.
Important: The use of quality cutting fluid is mandatory to prevent heat buildup and maximize tool life.
Key Features
Heavy Duty Cobalt: Ideal for drilling hard steel and stainless steel.
Tuffbox Pro Case: Features standing bit holders and a heavy-duty latch.
Colour Coded: Case and latch are color-coded for easy identification of Imperial Cobalt series.
Precision: 135° split point minimizes wandering.
Specifications
Size Range: 1/16" to 1/2" (Imperial)
Material: Fully ground HSS Cobalt
Application: Stainless steel, High tensile steel, Cast iron