Milwaukee 48-20-4150 Spline Drill Bit 1.5x16 in 2-count

Product Description

The MILWAUKEE 48-20-4150 is a spline-shank rotary hammer drill bit sold in a 2-count pack. Measuring 1-1/2 inches in diameter and 16 inches in overall length, this bit is engineered for heavy-duty core drilling and anchor hole applications in concrete, masonry, and stone. The spline drive interface transfers rotational torque and hammering energy from the rotary hammer to the bit with minimal slippage, supporting consistent penetration rates in demanding conditions. This bit is used by concrete contractors, HVAC installers setting equipment anchors, plumbers and electricians core-drilling through structural slabs and CMU walls, and general trade professionals working with rotary hammer tools on job sites.

This bit fits residential and commercial construction applications where large-diameter holes are required in reinforced or unreinforced concrete and masonry. Typical uses include setting large-diameter wedge and sleeve anchors, running sleeve penetrations through slabs and foundation walls, and preparing openings for conduit, piping, and equipment mounting hardware. The 2-count pack is suited for contractors who need a backup on the job or want to maintain a spare bit in their kit without placing a separate order.

Key Features

• 1-1/2 inch diameter for large anchor and penetration hole applications
• 16 inch working length for deep drilling through thick slabs and walls
• Spline drive shank for positive engagement with spline-drive rotary hammers
• 2-count pack provides a working bit and a jobsite spare
• Designed for concrete, masonry, and stone drilling

Compatibility

Designed as an OEM-style replacement and standard fitment for spline-drive rotary hammer tools requiring a 1-1/2 inch diameter spline shank bit.

Installation Notes

This bit is installed and used by licensed contractors and trade professionals operating spline-drive rotary hammer tools. Before changing or inspecting bits, power down and unplug the rotary hammer or remove its battery pack. Ensure the bit is fully seated and locked in the chuck before beginning drilling operations. Wear appropriate personal protective equipment including eye protection and hearing protection during concrete drilling work.

Technical Specifications

• Bit Diameter: 1-1/2 inches
• Overall Length: 16 inches
• Drive Type: Spline
• Pack Quantity: 2
• Package Weight: 3.13 pounds
• Package Height: 18.19 inches
• UPC: 0045242103256

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 48-20-4150