Quality Material and Shape-Adaptive Design: The brush's core structure contains a light and soft silicone brush head, along with a plastic handle. Due to silicone's flexible properties, the brush head can bend and rebound freely, effortlessly fitting into gaps of various shapes. This not only improves cleaning efficiency but also prevents any potential damage due to pressure. Dense Silicone Bristles Construction: This cleaning tool is equipped with thin yet dense silicone bristles. This design allows the brush to deeply penetrate narrow corners and crevices of sewing machines, effectively cleaning away stubborn dust, and threads. This superb detail-oriented capability ensures a much cleaner and smoother running condition for your sewing machine. Comprehensive Brush Heads Selection: This set includes 4 differently shaped silicone brush heads, each of them at reaching distinctive gaps. This generous quantity ensures your long term maintenance needs are fully covered. Maintain a clean sewing environment effortlessly Easy-to-Clean and Reusable Design: After use, you can easily clean the brush head with soapy water and air dry. This effectively removes any dust and lint on the cleaning tool, returning it back to its pristine condition, ready to be used for counteracting dust accumulation next time. A practical, reusable solution for your sewing machine maintenance routine. Value-Added Size: Each brush is 4-1/8 inch/ 10.5 cm long, including a 1 inch long brush section. This optimal size allows the brush to reach deep into hard-to-reach crevices, making no part of your sewing machine is left unclean. Keep every inch of your sewing machine dust-free.