Fellowes Plastic Combs - Round Back, 5/16", 40 sheets, Black, 100 pk - 10.75" Length - 0.31" Diameter - 40 Sheet Capacity - Letter 8.50" x 11" - Round - Plastic - 100 / Pack - Black Gives a professional appearance to bound reports and presentations Use with Fellowes or any standard, 19-ring comb-binding system Holds up to 40 Sheets; Black Size: 10-3/4" L x 5/16" Dia. 100 / Pack