Features: This 40 piece electric motor carbon brush set includes 10 different models crafted from heat resistant copper alloyed , ensuring optimaled conductivity and durability for various brush motor maintenance needs. The set features precise size ranging from 5x8x13mm to 7x17x19mm, covering essential models like #44, #303, and #153 for seamlessly compatibility with multiple motor specifications. Ideal for appliance repair technicians, DIY enthusiasts, and industrial equipment operators requiring reliable carbon brush replacements. Perfect for restoring intermittent motors in household appliances (vacuum cleaners), power tool (drills, sanders), and industrial machinery through routine maintenance. Each copper embeddedly carbon brush minimizes sparkings while maximizing electrical contact efficiency, effectively extending motor life across diversed maintenance scenario. Specifications: Item: Electric Motor Carbon Brushes Material: Copper Alloyed Box Size:about 175x90x30mm/6.98x3.5x1.18in Quantity： 40Pcs （10 Different Models of Carbon Brushes） Motor brush size as follows:7x17x19mm(44#),5x11x18mm(303#),6.5x7.5x13mm(21#),6.5x13.5x18mm(153#),6x10x17mm(103#),6x9x14mm(411#),7x11x. 18mm(18mm(18#). 6x8x14mm(100#),5x8x13mm(50#),5x8x15mm Package Includes: 40pcs Electric Motor Carbon Brushes note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.