Drill bit SDS Plus MILWAUKEE MX4 20 x 450 mm for rotary hammer drilling in concrete

The MILWAUKEE MX4 SDS Plus drill bit 20 x 450 mm is designed for rotary hammer drilling in concrete and masonry. It combines an SDS Plus shank for fast tool engagement with a 20 mm cutting diameter and a 450 mm overall length to reach deeper drilling positions. The MX4 tip geometry improves drilling speed and wear resistance, making the bit suitable for tasks that require reliable penetration and longer reach when installing anchors or drilling through solid structures.

Advantages

The MX4 tip geometry provides enhanced cutting efficiency and reduced jamming during drilling. The SDS Plus shank ensures secure and quick bit changes in compatible rotary hammers, while the 450 mm length enables deeper holes without extensions. The 20 mm diameter is commonly used for anchor fixings and through-holes in reinforced concrete, and the durable construction helps maintain performance over repeated heavy-duty use.

Suitable for

• Drilling through concrete walls and floors for anchor installation
• Making through-holes for pipes and conduits in masonry
• Heavy-duty demolition and renovation drilling tasks
• Professional construction and building site work requiring deeper holes

Key specifications

• Shank type: SDS Plus for tool compatibility and fast changes
• Tip geometry: MX4 for improved drilling speed and reduced jamming
• Diameter: 20 mm suitable for standard anchor sizes
• Overall length: 450 mm for deep penetration and reach
• Material and construction: hardened design for concrete and masonry applications

How to use

Fit the SDS Plus shank into a compatible rotary hammer and ensure the tool is set to hammer drilling mode. Mark and align the drilling point, start at low speed to establish the hole, then apply consistent pressure while allowing the bit to drill with the tool's hammer action. Remove debris from the hole periodically by withdrawing the bit while the tool runs briefly or by using compressed air. For long holes, periodically pull the bit out to clear dust and prevent overheating.

Usage recommendations

Use appropriate personal protective equipment, including eye protection, hearing protection and dust mask. Select the correct hammer mode and appropriate drill speed for concrete. For reinforced concrete, progress with steady pressure and avoid excessive lateral forces. Replace the bit when cutting performance decreases significantly to preserve hole quality and tool safety.