The Flex M 1509 FR operates two diamond blades in parallel. Channels (max. 21 mm ≈ 3/4” wide and 29 mm ≈ 1 1/4” deep) can be removed with supplied chisel. Applications include cutting slots for conduits, pipes and cable. The dustless feature allows for clean precision cuts in concrete, solid surface, Corian, cultured and natural stone when used in combination with an industrial vacuum cleaner. Additional accessories, such as 130 mm concrete grinding and cutting discs, industrial vacuum cleaner, hose and adapters are sold separately.