Milwaukee Electric Tool Corp 48-20-3946 Sds-max Bit 7/8x21in

Product Description

The Milwaukee Electric Tool Corp 48-20-3946 is an SDS-Max 4-cutter rotary hammer bit designed for heavy-duty concrete and masonry drilling. The 4-cutter carbide tip geometry improves material removal and reduces heat buildup during extended drilling cycles. With an overall length of 21 inches and a working length of 17 inches, this bit handles deep anchor and penetration applications where shorter bits fall short. It fits any SDS-Max rotary hammer and is installed and serviced by licensed electricians, general contractors, and concrete trade professionals.

This bit is suited for commercial and residential concrete drilling tasks including core anchor installation, conduit sleeve penetrations, and structural through-drilling. The SDS-Max shank provides positive chuck engagement and efficient hammer energy transfer, making it appropriate for high-cycle production drilling in reinforced concrete, block, and hard masonry. The 7/8-inch diameter is a common size for wedge anchor and sleeve anchor applications across structural and MEP trades.

Key Features

• 4-cutter carbide tip for faster material removal and extended bit life in hard concrete
• SDS-Max shank for positive engagement with full-size rotary hammer chucks
• 21-inch overall length with 17-inch working length for deep-reach drilling
• 7/8-inch diameter suits common anchor and conduit sleeve penetration requirements
• Sold in a package quantity of 12 units for production and contractor use

Compatibility

Designed as a direct-fit replacement for SDS-Max rotary hammers accepting standard SDS-Max shank tooling across residential and commercial applications.

Installation Notes

SDS-Max bits are installed and operated by qualified trades personnel following tool manufacturer guidelines. Always confirm the rotary hammer is powered off and unplugged before inserting or removing the bit. Wear appropriate PPE including eye protection and hearing protection during operation. Inspect the bit for carbide tip damage or shank wear before each use and remove from service if defects are present.

Technical Specifications

• Shank Type: SDS-Max
• Number of Cutters: 4
• Bit Diameter: 7/8 inches
• Overall Length: 21 inches
• Working Length: 17 inches
• Weight: 31 pounds (package of 12)
• Package Quantity: 12
• Unit of Measure: EA

Standard Information

• Brand: Milwaukee Electric Tool Corp
• Manufacturer Part Number: 48-20-3946