Freud DMAPL4040 Sds-plus Hammer Bit 3/16x4x6 Full Carbide

Product Description

The FREUD DMAPL4040 is a 3/16-inch x 4-inch x 6-inch SDS-Plus rebar demon hammer drill bit featuring a 4-cutter full carbide head construction. Built for high-powered rotary hammer applications, this bit uses tri-metal diffusion bonding technology to bond the full carbide head to the shank, resisting heat buildup and preventing tip breakage under repeated impact loads. The precision-ground tip delivers accurate hole starts and consistent bore geometry in concrete containing rebar. Licensed concrete and masonry trades rely on this bit where ANSI-compliant anchor-setting holes are required. Sold in a package of 5 bits.

This bit is suited for commercial and residential concrete work where rebar-reinforced slabs, walls, or footings must be drilled for anchor installation, doweling, or post-installed fastener systems. The SDS-Plus shank interfaces directly with SDS-Plus chuck rotary hammers, both corded and cordless. The 4-cutter full carbide head geometry accelerates material removal compared to standard 2-cutter designs, making it appropriate for high-cycle production drilling where downtime between holes affects job productivity.

Key Features

• Full carbide head construction resists breakage and heat generated during rebar contact
• 4-cutter head geometry for faster penetration rates in reinforced concrete
• Tri-metal diffusion bonding technology secures the carbide head to the steel body
• Precision tip designed for stable hole starts and ANSI-approved anchor-setting accuracy
• Compatible with corded and cordless SDS-Plus rotary hammers
• Sold as a package of 5 bits

Compatibility

Designed for use in corded and cordless SDS-Plus rotary hammers. The SDS-Plus shank is the standard interface for most mid-range rotary hammer drills used in concrete and masonry applications.

Installation Notes

Installation should be performed by qualified masonry or concrete tradespeople familiar with rotary hammer operation and anchor manufacturer requirements. Confirm the rotary hammer chuck accepts SDS-Plus shanks before inserting the bit. Wear appropriate PPE including eye protection and hearing protection during operation. Follow anchor manufacturer hole-cleaning procedures after drilling to meet ANSI load-rating requirements for post-installed anchors.