Drill bit set KWB 247190

The KWB 247190 drill bit set contains three chisel-style bits designed for use with rotary hammers. The set includes a 20 mm flat chisel bit, a pointed chisel bit, and a 40 mm scaling chisel bit. Each bit has a working length of 250 mm and is intended for demanding tasks such as light demolition, surface scaling and chiselling, and creating openings in masonry materials. The bits are produced to meet practical jobsite requirements and are compatible with common SDS-plus and similar rotary-hammer connections used in professional and DIY tools.

Advantages

The set offers a compact selection of chisel types to cover common chiselling and scaling operations without the need to purchase individual pieces. Durable steel construction and heat-treated tips improve wear resistance under repeated impact, while the standardized shank and 250 mm length provide stable reach and control. The variety of tip shapes—flat, pointed, and wide scaling—ensures versatility across different materials and task types.

Suitable for

• Removing tiles, mortar and plaster
• Light demolition of masonry
• Creating channels and openings in brick or concrete
• Surface preparation and scaling of concrete

Key specifications

• Set composition: 3 chisel bits — flat chisel (20 mm), pointed chisel, scaling chisel (40 mm)
• Length: 250 mm (each bit)
• Intended tool type: rotary hammer
• Tip styles: flat, pointed, wide scaling
• Material: heat-treated steel for impact resistance

How to use

Select the chisel bit that matches the task: use the flat chisel for prying and removing tiles or mortar, the pointed chisel for breaking and making initial openings, and the wide scaling chisel for scraping and surface removal. Securely insert the bit into the rotary hammer chuck until it locks, set the hammer function as required, and operate the tool with steady pressure while maintaining a firm grip. Periodically inspect the bit for wear or deformation, and replace when tip geometry is compromised to maintain effective performance.

Usage recommendations

Use appropriate personal protective equipment including eye protection, hearing protection and gloves. Avoid excessive lateral bending forces on the bits to reduce the risk of breakage; allow the tool’s impact force to do the work. For prolonged use, pause periodically to let the tool and bit cool and to check bit condition. For tasks involving reinforcement or very hard aggregate, consider using purpose-designed chisels or consulting tool manufacturer guidelines.