Dsnaduo Automotive Neoprene Expansion Plug 1 inch to 1 1 8 inch ( 25mm 28mm) ,4 Pack sold2024 and more Black strip industrial_Aug2024_update and more Black strip wheels are designed to remove light painting and coatings Blue strip disc offers a longer service life and higher efficiency than the black strip discs Purple strip discs provide the longest service life and higher efficiency than the black and blue strip discs Specifications Material：Silicon Carbide Abrasive Backing Type: Roll Lock Color: Blue Black Purple (each 4 pcs) Size: 2 Inches diameter Quantity: 12 pieces + 1 holder Maximum speed: 13000RPM Read more Compatibility Quick lock discs fit most die grinders on the market: Compatible with Ingersoll Rand 301B Material:copper+PVC A tight fit will keep them from working their way out It includes 4 pcs