This is a Compatible Samsung SCX5312R2 (SCX-5312R2) Laser Drum unit guaranteed to perform with Samsung Laser Printers. It replaces the original Samsung SCX5312R2 Laser Drum unit. The compatible replacement SCX5312R2 Laser Cartridges and supplies (also known as generic) are specially engineered to meet the highest standards of quality, reliability and exceptional yields that meet or exceed OEM (Original Equipment Manufacturer) standards for the SCX-5312R2 and offer high-quality printing results. This includes a new drum and other new internal parts. We directly import these compatible SCX-5312R2 / SCX5312R2 laser cartridges from an ISO-9001 certified factory in Korea just like the genuine Samsung. Since we import ourselves we can pass the savings on to you. The SCX-5312R2 is an economical alternative to expensive OEM SCX5312R2 Samsung Laser Drum units and supplies, and offer big savings over brand-name SCX-5312R2 Laser Drum unit and supplies. The use of compatible replacement Laser Drum Units and supplies does not void Printer Warranty. Our Compatible SCX5312R2 Laser Drum is a replacement for Samsung SCX5312R2 / SCX-5312R2 Drum Unit. The SCX-5312D6 is the replacement laser cartridge that fits into the SCX-5312R2 drum housing. You can replace the Samsung SCX-5312D6 without replacing the entire SCX5312R2 drum housing. This is the drum unit only, it does not include the toner cartridge which can be purchased separately. We offer a 100% Quality Satisfaction Guarantee on our Compatible SCX-5312R2 Laser Drum Units and supplies. For use in the following printers: Samsung SCX-5112,SCX-5312F,SCX-5115,SCX-5315F & Samsung MSYS 830,MSYS 835P & Samsung SF-830,SF-835P . 4inkjets is the exclusive reseller of LD Products brand of high quality printing supplies on Amazon.