Chisel SDS-Plus GEKO G40020 20 x 250 mm — rotary hammer chisel for masonry and concrete

The GEKO G40020 chisel SDS-Plus 20 x 250 mm is a rotary hammer accessory designed for chiselling and light demolition in masonry and concrete. Built from solid steel with a standard SDS-Plus shank, this 250 mm length chisel provides reach for working on tiles, mortar joints and small concrete repairs. The tool is intended for use with SDS-Plus rotary hammers and offers a balance of strength and manoeuvrability for renovation and construction tasks.

Advantages

The chisel's hardened steel construction ensures durability under repeated impact, while the SDS-Plus shank enables fast, secure fitting and reliable power transfer from compatible rotary hammers. Its 20 mm blade width gives a focused cutting area for efficient removal of tiles, mortar or thin layers of concrete without excessive material damage. The 250 mm length increases accessibility in recessed or awkward areas compared with shorter bits.

Suitable for

• Removing ceramic and porcelain tiles from walls and floors
• Breaking out mortar joints between bricks and blocks
• Chiselling and small-scale concrete repairs
• Light demolition and material removal on renovation sites

Key specifications

• Type: SDS-Plus chisel for rotary hammers
• Blade width: 20 mm
• Overall length: 250 mm
• Material: forged/hardened steel
• Shank: standard SDS-Plus connection for quick fitting

How to use

Insert the SDS-Plus shank into the rotary hammer’s chuck and ensure it locks securely before use. Select the hammer or hammer-only mode on the tool according to the task and apply steady, controlled strikes while guiding the chisel along the work surface. For tile removal, start at a grout or edge to lift tiles gradually; for mortar or concrete, work progressively to avoid overloading the chisel. Wear appropriate personal protective equipment — safety glasses, gloves and hearing protection — and maintain a stable stance while operating the rotary hammer.

Usage recommendations

Use the chisel with rotary hammers rated for SDS-Plus bits and match the hammer power to the task: lower impact settings for delicate removal, higher settings for stubborn mortar or concrete. Periodically inspect the chisel for wear or deformation and replace it if the cutting edge becomes excessively rounded or cracked. Store the chisel in a dry place to prevent corrosion.