Widely Used: It can be used in red brick walls, cement walls, foam walls, mixed brick walls and other brick wall buildings. It can be used to mine rocks and walls to remove sharp objects. 5 in 1 Set: 2 x pointed chisels (15 x 0.45 cm, 25 x 0.4 cm), 3 x flat chisels (15 x 0.2 cm, 25 x 2 cm, 25 x 4 cm). Applicable Suitable: Suitable for all electric hammers, plug-in hammers or impact drills with SDS-Plus mounts such as Bosch, Makita, Hilti, Einhell, Kress, Millwaukee and Dewalt etc. High Quality Steel: High quality steel forging + high temperature quenching treatment, high hardness, high wear resistance, high toughness. Surface protection layer: Additional surface protection can minimize friction and wear and extend service life.