refillable ink cartridge for MFC-J3720,J3520; MFC-J6520DW,J6720DW,J6920DW(long type and short type)

yes, there are there types for option, can use on all region, such as 

           MFC-J3720,J3520; MFC-J6520DW,J6720DW,J6920DW

     but you need install original/OEM chips to our ink cartridge, or use compatible chips. 

    1, short type, the size are same as original/OEM,  black: 70ml, colors: 15ml 

    2, long type A,  longer than original/OEM,  black: 110ml, colors: 70ml

    3, long type B, longer than original/OEM,  supper big black: 270ml, colors: 70ml

note: for the long type, you need install the cover part as our installation guide.

cartridges number list for different region( our cartridges are same desgin)

    1,  LC509XL-BK LC505XL-C/M/Y 

    2,   LC529XL-BK LC525XL-C/M/Y 

    3,   LC539XL-BK LC535XL-C/M/Y 
    4,   LC549XL-BK LC545XL-C/M/Y     

    5,   LC109XL-BK LC105XL-C/M/Y  

    etc...

 for long type, pls install the cover part in this way, pls check with our sales for more details.