Add new workout stations to your existing workbench with this Curl Machine Attachment. Designed to fit all Powertec workbench models, this attachment is extremely versatile and simple to connect. The Workbench Curl Machine Accessory is precise in function for all types of users, designed to blast and build your biceps with Bicep Curl and Row Pull exercises. New features for the Curl Machine Accessory include stainless steel weight horns and insert tube. Please note: for use with Olympic Weight Plates only. Weights and benches are not included.