This is my 3rd purchase of compatible Aztech toner cartridges and they are fantastic! I process insurance claims and average 200-400 pages a day and these cartridges last a long time. The performance of these cartridges is impressive. Even with the large print volumes that I handle every day. As early as spring 2020, I started looking for a cheaper alternative to the original HP cartridges I used. HP cost over $100 each time I ordered a cartridge and Aztech will give you 2 cartridges for about $80. You can't beat this price. These are by far the best cartridges I've used and I've tried many. Removing the chip from an original HP cartridge is very easy. You can use the tweezers that comes with the Aztech cartridge or you can get needle nose pliers and I wrap a small piece of tape around both ends of the pliers so you don't scratch the chip when removing and carrying it. This is for the Aztech cartridge. I've been using the same HP chip for a few months. I will continue to buy Aztech cartridges for their quality and value. Save money without sacrificing quality! Buy Aztech! I am a customer for life! - John