Kisankraft Pack of 4 Clutch Spring Small is a genuine replacement set for 2-stroke brush cutters, compatible with KK-BC-555, 7640, and 8640 models. These small clutch springs are engineered to provide the necessary tension for smooth clutch engagement and disengagement, ensuring efficient power transfer and reliable operation. Built for durability, they are ideal for routine maintenance and repair of your brush cutter’s clutch system.