The Tamerica 240HB is the most economical manual plastic comb opener available on the market yet it has the same features as many of the more expensive plastic comb openers. The Tamerica / Tashin 240HB opens combs that are up to 14" in length and up to 2" in diameter and is compatible with all of the plastic combs that we carry. The 240HB is ideal for users who already have an electric comb punch and are looking to increase productivity by allowing one user to bind while the other punches. It features an adjustable binding stop to eliminate over opening plastic combs and has a heavy duty, durable metal exterior that is built to last.