(a) Best seller from SOLO. (b) Spring & prongs duo in a file cover with strong polyboard. (c) Solo trade mark aluminum clip with original "spring steel wire" springs for lifetime use. (d) Wire prongs on left to hold springs at perfect angle to shuffle & store documents. (e) Conventional clip mechanism with trademark solo with quality to add or remove documents without disturbing the sequence of the stack. (f) Additional lever clip on left to hold papers without punching. (g) Holds upto 180 sheets. (e) Available in vibrant colors.