Sold as 1 Each. Standard drum, up to 30000 pages. This package includes one black laser drum kit. OKI drum kit produces superior quality for a wide array of printing needs. Compatible with OKI B411d, 411dn, 412dn, 431d, 431DN, 431DN+, 432dn, 512dn, OKI COREFIDO B411dnB, B431DN, B432DNW, OKI MB461, 461-L, 471, 471-L, 471W, 472dnw, 491+LP MFP, 491dn, 492, 492dn.