Drill Bit Irwin SDS+ 25 mm for Concrete, model 10502056

Irwin SDS+ 25 mm drill bit for concrete is a heavy-duty masonry bit designed for use with SDS+ rotary hammer drills. It offers a 25 mm diameter for drilling anchor holes, creating passages for conduit and installing heavy fasteners in concrete, stone and similar substrates. The carbide-tipped geometry and shank compatible with SDS+ systems provide efficient impact drilling and reliable engagement with compatible hammer drills.

Advantages

The bit combines a 25 mm diameter cutting head with a reinforced tip geometry that maintains bore accuracy and extends service life under repeated impact loads. The SDS+ shank ensures quick insertion and secure retention in supported rotary hammer chucks. Its construction minimizes chipping in brittle materials and helps clear debris from the hole for more consistent drilling progress.

Suitable for

• Drilling anchor holes in concrete for mechanical fasteners and chemical anchors
• Creating passages for conduits, pipes and cable trays through masonry
• Installing heavy-duty fixings in stone, block and other masonry materials
• Professional tradespeople and experienced DIY users with SDS+ rotary hammers

When it may not be suitable

This SDS+ 25 mm masonry bit is optimized for impact drilling in concrete and similar materials; it is not intended for use in wood, metal or with standard non-SDS drill chucks. For precision drilling in thin tiles, ceramics or delicate finishes, a specialized tile or glass bit and a low-impact drilling technique are more appropriate.

Key specifications

• Drill diameter: 25 mm
• Intended material: concrete, stone and masonry
• Shank type: SDS+ compatible
• Tip: carbide-tipped geometry for impact drilling

How to use

Fit the SDS+ shank into the rotary hammer chuck until it locks, then select the hammer drilling mode on the tool. Mark the drilling position and start at low speed to ensure correct seating, then apply steady forward pressure while allowing the hammer action to drive the bit. Withdraw the bit periodically to clear dust from the hole and reduce heat build-up. Use appropriate personal protective equipment such as eye protection, hearing protection and a dust mask when drilling masonry.

What to consider before purchase

• Confirm compatibility of your rotary hammer with SDS+ shank tooling
• Verify that a 25 mm diameter matches the anchor, conduit or fixing you plan to install
• Consider available replacement bits and intended frequency of use to determine durability needs
• Assess whether a set with multiple diameters would be more practical for varied tasks

Usage recommendations

For best results when drilling concrete, use the hammer mode on your SDS+ rotary hammer, keep the bit aligned with the drilling axis, and pull the bit back regularly to clear debris. Allow the bit to cool between prolonged runs to extend its service life.