Brother HL-4040 4070 Yellow Toner Refill Kit. Refills TN-115Y. Manufactured by Toner Eagle. Toner is designed specifically to work in the Brother TN-110 and TN-115 cartridge. We test many toner samples from toner manufacturers. Most are rejected as they do not meet the look and specifications of the OEM toner. Save Up to $80 on each yellow TN-115 Cartridge Refilling your own toner cartridges is more environmentally friendly than buying new, compatible, or even remanufactured toner cartridges. There is almost zero waste. We provide easy-to-follow instructions with photographs of the process. The process is so easy that most people do not need help. But if you do need friendly tech support, we are only a telephone call away. We guarantee that you will be happy with our productor we refund your money.