InkOwl Toner Refill Kit for SAMSUNG MLT-D101S (1-Pack, with reset chip) Includes 1 bottle of Ink Owl premium formulation toner, 1 reset chip, a spout for easy pouring, easy-seal tape along with detailed, graphic instructions. To refill this cartridge model, you'll need to pierce holes. To do so, it is highly recommended that you use a laser cartridge holemaking tool designed for this purpose. The use of any other tool, including a drill, is not recommended to avoid damaging sensitive internal components. You can then use the provided easy-seal tape to seal the holes. To get the tool: http://www.amazon.com/dp/B008J4P5JU For the proper functioning of the refilled cartridge, we have included a replacement reset chip. Note that the chip supplied in this particular kit is the North American version for USA/Canada. Our instructions will guide you step-by-step through the entire refill process including replacing the chip. Includes 55g of toner powder for 1500 pages at 5% page coverage. This is the same yield as an original SAMSUNG cartridge would provide.