1. Model Number: Canon 520BK/521BK/521C/521M/521Y refillable ink cartridge

2. Ink volume: 520BK:20ml  521BK/C/M/Y: 10ml

3. Compatible for: Canon IP3600/IP4600/MP540/620/630/980

4. Certification: ISO 9001:2000 and ISO 1400:2004.

5. Warranty: 2 years.

6. Color: C, K, M, Y.