Set of 3 escalonadas conical steel brocas, HSS 4-12/4-20/4-32

High quality material: The scaled conical brocas are made of high speed steel and coated with titanium nitro to reduce heat through friction and promote cooling. Resistent and durable. Design of double flauta and point partida: The design of double flauta and point partida avoids deslizamiento, quickly eliminates the virutas and desbarba los agujeros, which results in a perforation and more quickly and gently with less pressure. Three small steps: The different sizes meet various needs. Designed for the precise perforation of agujeros from 4 mm to 32 mm in diameter, the variety of pitch sizes allows perforation or enlargement of different agujeros with a single thread, guaranteeing optimum speed and precision. Ideal for: Widely applicable to cut or enlarge edges in materials such as fine steel, fine metals (thickness ≤5 mm), wood, fine wood, plastic, aluminum, PVC, fiberglass, etc. 100% Satisfaction Guaranteed: We promise to respond to all our concerns and concerns immediately. We also have a better and more definitive solution. Material: HSS steel + titanium coating Type: pillar broca Quantity: 3 pieces Color: gold Usage: used in gun perforation, bank perforation Tamaño: jaws of 5 steps: 4-12 mm (4 mm, 6 mm, 8 mm, 10 mm, 12 mm). 9 jaws: 4-20 mm (4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 14 mm, 16 mm, 18 mm, 20 mm). 15 jaws of pitch: 4-32 mm (4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 24 mm, 26 mm, 28 mm, 30 mm, 2 mm). Note: 1. Use safety glasses before perforation. 2. Leave it at the high temperature, refrigerate the pot with water while it works to prolong your life and avoid blockages. 3. The recommended speed is 250 to 400 RPM/min.