Brady 2023/45989 standard MSDS binder 1-1/2" ring,1-1/2" diameter rings hold 275-300 sheets, 21/2" diameter ring holds 400-500 sheets and 3" diameter ring hold 600 sheets. Size is 1-1/2" diameter rings. Legend is "MATERIAL SAFETY DATA SHEETS", color is red on yellow, , material is polyethylene.