Milwaukee 48-20-4068 Spline Drill Bit 11/16x16 in 2-pack

Product Description

The MILWAUKEE 48-20-4068 is a spline-shank drill bit designed for heavy-duty rotary hammer drilling in concrete, masonry, and other hard substrates. Sold as a 2-count pack, each bit measures 11/16 inches in diameter with a 16-inch working length, giving tradespeople the reach needed for deeper anchor and pass-through holes. The spline drive interface transfers torque and impact energy efficiently from the rotary hammer to the bit, reducing operator fatigue and improving hole quality. This bit is a standard tool for electricians, plumbers, HVAC techs, and general contractors who core through concrete floors, block walls, or slabs on a regular basis.

This bit is suited for residential and commercial applications where a spline-drive rotary hammer is already in use. Common tasks include drilling anchor holes, conduit pass-throughs, pipe sleeve penetrations, and equipment mounting points in poured concrete or CMU block. The 16-inch length provides clearance in tight framing bays or stacked block conditions. The 2-count pack supports jobsite continuity when one bit is down for sharpening or replacement.

Key Features

• 11/16-inch diameter for standard anchor and sleeve-fit hole sizes
• 16-inch overall length for deep-reach penetrations through thick slabs or block
• Spline drive shank for compatibility with spline-drive rotary hammers
• 2-count pack included per unit sold
• Designed for use in concrete, masonry, and CMU block

Compatibility

Designed for use with spline-drive rotary hammers; verify your hammer accepts a spline-drive chuck or adapter before installation.

Installation Notes

Installation should be performed by qualified tradespeople familiar with rotary hammer operation and applicable safety codes. Always disconnect power or confirm the tool is unpowered before changing bits. Wear appropriate eye, ear, and respiratory protection when drilling concrete or masonry. Do not use this bit in standard drill-only or SDS-plus chucks without the correct spline adapter.

Technical Specifications

• Bit Diameter: 11/16 inches
• Bit Length: 16 inches
• Shank Type: Spline Drive
• Pack Quantity: 2
• Package Weight: 1.14 pounds
• Package Height: 18.88 inches
• UPC: 0045242102587

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 48-20-4068