These groove are made of premium plastic and nylon material for durable use. It can be used for window slot cleaning use. This brush can be used to remove the dirt in your window groove, you will save of time. Portable and compact, easy to hold and carry. Features - Color: Blue, White. - Material: PP + Nylon. - Size: 20.00X7.00X2.00cm/7.86X2.75X0.79inch. - The brush is made of PP and nylon materials, safe and gentle, durable to use. - Small and easy to hold, convenient to hold, no dirty hands, close to the surface, and more effortless cleaning. - Go deep into joints, quickly , cracks, corners, clean no , and easily brush dust. - The design is very clever, with a hole that allows us to put it conveniently when not in use. - With a wide range of applications, it can help effectively clean stubborn stains in crevices, such as window frames, countertops, sinks, etc. Package list: 4 x cleaning