Core Cylinder, For Use With Grainger Item Number 31NG71, 31NG73, 31NG7, 4YF89, 4YF90, 4YF91, 4YF91, 31NG60, 4YF87, 4YF88, 31NG47, 31NG65, 31NG66, 31NG89, 5BB73, 5BB74, For Use With Mfr. Model Number 5000, 1000, L1000, EE1000, 8100, LP1000, Fits Brand Simplex, Removable