Drill bit set Makita D-42444, SDS‑Plus, 17 pcs, concrete bits 110–260 mm, sizes 5–14 mm, with case

The Makita D-42444 drill bit set contains 17 pieces specifically engineered for use with rotary hammers. This set covers a range of diameters from 5 mm to 40 mm and includes varying lengths up to 260 mm to address a wide variety of drilling needs in masonry materials such as brick, concrete, granite, and natural stone. Bits are constructed for durability and sustained performance under repeated impact drilling.

Advantages

The set provides a broad size range that reduces the need to switch tools or buy individual bits for different hole diameters. Drill bits designed for rotary hammers deliver efficient debris removal and reduced clogging during percussion drilling. Robust material and manufacturing ensure resistance to wear when used in abrasive masonry, while the available long lengths make it possible to reach deeper anchoring points without extensions.

Suitable for

• Drilling anchor and fixing holes in concrete and brick
• Installing through-holes for piping or conduits in masonry
• Preparing holes for bolts and fasteners in granite and natural stone
• General purpose construction and renovation tasks requiring multiple diameters

Key specifications

• Set size: 17 pieces
• Diameter range: 5 mm to 40 mm
• Maximum length: up to 260 mm
• Intended use: rotary hammer percussion drilling
• Suitable materials: brick, concrete, granite, natural stone
• Construction: impact-resistant masonry bit design for durability

How to use

Select the drill bit diameter appropriate for the required hole and insert it securely into the rotary hammer chuck according to the tool manufacturer’s instructions. Use the rotary hammer in hammer mode for masonry drilling, apply steady pressure and allow the tool to perform the work rather than forcing the bit. For deeper holes use the longer bits included in the set and periodically withdraw the bit to clear dust and debris. Follow all safety guidance for eye, ear, and hand protection when operating power tools.

Usage recommendations

For extended bit life, avoid excessive side pressure and high idle rotation without impact. Begin with a smaller pilot hole for precise placement when drilling large diameters, and use appropriate anchors and fasteners matched to the hole size and base material.