Clarkson Osborn Two-Tone jobber-length drill bit in high-speed steel (HSS), No. 21 (0.1590 in). The self-centering 135° split point eliminates walking and reduces the thrust needed, while the black and gold surface treatment adds lubricity. Suited to hand drilling and machine applications, and an excellent choice for steel and stainless steel.
• Size: No. 21 – decimal equivalent 0.1590 in
• Flute length 2-1/8 in; overall length 3-1/4 in
• Material: HSS; black & gold surface treatment
• Point: 135° split point (self-centering); regular spiral flute
• Package of 10