Compatible OKI B4100/B4200/B4300 (Type 9) Black Toner. It can print up to 2,500 pages; approximately the same as that of an original toner. Neither does it require any handling (it includes a chip), nor affect the printer quality.
High Capacity Compatible OKI B4300 (Type 9) HC Black Toner. The toner can print 6,000 pages, with the same quality as the original manufacturer toner. Neither does it reduce the warranty nor affect the printer quality. It does not require previous handling (it includes a chip).
Compatible OKI B4100/B4200/B4300 (Type 9) Drum. The drum lasts 25,000 pages, approximately the same as that of an original drum. Please remember that the drum is not the same as the toner: the toner is placed above the drum. Neither does the compatible drum damage the printer nor invalidate the warranty.