InkOwl® - 4 Flag Gear Kits for BROTHER TN-310, TN-315 (Starter)
Starter BROTHER TN-315-series cartridges require that a flag gear be installed to function after being refilled. Printer models: Brother HL-4150CDN, HL-4570CDW, HL-4570CDWT, MFC-9460CDN, MFC-9560CDW, MFC-9970CDW