Milwaukee Tool 48-20-3906 Sds-max Drill Bit 1/2 in

Product Description

The MILWAUKEE TOOL 48-20-3906 is a carbide-tipped, SDS-Max rotary hammer drill bit built for heavy-duty concrete and masonry drilling. The 1/2-inch diameter bit features a chisel cutting shape and a high-speed steel body with a carbide-tipped tip for sustained performance in demanding rotary hammer applications. With a 31-inch usable length and a 36-inch overall length, this bit is designed for deep-bore work in thick concrete, block, and stone. Licensed electricians, plumbers, HVAC installers, and general contractors commonly reach for this bit when core routing or anchor-hole drilling through structural materials is required.

This bit is suited for commercial and residential applications where extended reach into concrete or masonry is needed. Typical scenarios include setting anchor bolts in foundations, drilling conduit penetrations through concrete walls, or routing pipe and duct sleeves through block construction. The SDS-Max shank is compatible with SDS-Max rotary hammer tools, which are standard in trade work involving high-impact drilling in reinforced or thick concrete substrates. The 30-inch flute length helps clear debris from deep holes efficiently throughout the bore cycle.

Key Features

• Carbide-tipped chisel cutting geometry for aggressive penetration in concrete and masonry
• SDS-Max shank provides positive tool engagement and fast bit changes on compatible rotary hammers
• 31-inch usable length and 36-inch overall length enable deep-bore applications in thick structural materials
• 30-inch flute length promotes efficient debris evacuation from deep holes
• High-speed steel body supports durability under high-impact rotary hammer operation
• Meets ANSI B212.15 standards for rotary hammer drill bits

Compatibility

Designed for use with SDS-Max rotary hammer tools. The SDS-Max shank interface is an industry-standard connection used across heavy-duty rotary hammers in the trade.

Installation Notes

This bit is installed and operated by qualified trade professionals using SDS-Max rotary hammer equipment. Before inserting or removing the bit, power down the tool and confirm the chuck lock is disengaged. Wear appropriate PPE including eye protection and hearing protection when drilling concrete or masonry. Do not use this bit in standard drill/driver chucks — the SDS-Max shank requires a matched SDS-Max tool interface.