1 Each. Toner cartridge is designed for use with Samsung ML-5512ND, ML-5515ND, ML-6512ND and ML-6515ND to maximize performance. Original supplies enable consistent printing without reliability problems. Samsung original supplies guarantee high-quality pages without quality defects. It carries a color-changing security label to prove they are original products. Monitoring supplies technology notifies customers when toner is low or needs to be replaced. Cartridge yields approximately 10,000 pages.