30888-VB11 7/8 in to 1-1/8 in Vari-Bit Step Drill Bit #11

Product Overview

Key Features

• Two-step drilling design with 7/8 in and 1-1/8 in hole sizes.
• Patented two-flute geometry produces clean, round, burr-free holes.
• Split-point tip helps start holes quickly and minimizes walking.
• High-speed steel construction for strength and long service life.
• Steam oxide finish improves wear resistance and drilling performance.
• Enhanced flute design promotes rapid chip evacuation.
• 3/8 in three-flat shank provides secure chuck grip and reduced slippage.
• Suitable for drilling most metals, including stainless steel.
• Eliminates the need to switch between multiple drill bit sizes for specified hole diameters.

Specifications

• Model Number: 30888-VB11
• Step Drill Bit Number: #11
• Minimum Hole Diameter: 7/8 in
• Maximum Hole Diameter: 1-1/8 in
• Number of Steps: 2
• Number of Hole Sizes: 2
• Step Depth: 1/8 in
• Overall Length: 2-3/4 in
• Shank Size: 3/8 in
• Shank Type: 3-Flat
• Material: High-Speed Steel (HSS)
• Finish: Steam Oxide
• Point Style: Split Point
• Point Angle: 135°
• Flute Count: 2
• Cutting Direction: Right-Hand
• Compatible Materials: Most metals and stainless steel

Applications

• Enlarging existing holes in sheet metal.
• Electrical conduit installation requiring 7/8 in and 1-1/8 in openings.
• Metal fabrication and maintenance work.
• HVAC installation and service applications.
• Electrical panel and enclosure modifications.
• General contractor and industrial maintenance tasks.
• Stainless steel and metal drilling applications requiring smooth, accurate hole sizing.