A preacher curl bench is a must have for anyone who wants to develop their biceps. Preacher curl benches and attachments are extremely effective isolating the biceps and forearms. Preacher curls can be executed with an EZ curl bar or dumbbells. This exercise mainly works the lower part of your bicep but it also works the forearm. The Deltech Fitness preacher curl bench is one of the highest quality benches on the market. Its frame is constructed of solid 14 gage steel tubing and comes with locking nuts and high quality hardware to make sure it stays rigid and dependable forever.