This is a Genuine Brother TN247 Multipack of Laser Toners compatible with the following printers:

Brother DCP-L3510CDW Brother DCP-L3517CDW Brother DCP-L3550CDW Brother HL-L3210CW Brother HL-L3230CDW Brother HL-L3270CDW Brother MFC-L3710CW Brother MFC-L3730CDN Brother MFC-L3750CDW Brother MFC-L3770CDW 
 
The Black Laser Toner has a page yield of 3000 All three colors have a page yield of 2300