3 hole punched, looseleaf sheets (108 g/m, 215 x 279 mm) 12 stave Printed on two sides. Pure white paper for xerographic purposes. Package with 50 sheets. Archives music manuscript paper is the finest quality available. Archives utilizes the same type of balanced pH paper used by the Library of Congress, ensuring your compositions will look their best and will last a long time.(Archives Looseleaf sheets are 8 1/2" x 11". Available in 8, 10 or 12 stave. LL8S, LL10S and LL12S are printed on 24 lb egg shell ledger stock. X8S, X10S, and X12S are printed on pure white stock for xerographic purposes.)