Ideal for frequent office use the sturdy and practical wirebind w20 wire binder is designed to make manual binding easier with document separating and auto centering as standard features the wirebind w20 can punch up to 20 80gsm sheets at once and bind up to 125 sheets using a 14mm wire it can bind both a4 and a5 documents features simply click wire selector adjusts its settings to suit the wire size ensures accurate wire closure every time a4 and a5 punching punch capacity 20 shee