Helios Thermal Binding Machine- 300 Sheets- 20-7/8w x 9-7/16d x 3-15/16h- Gray Ideal for medium duty home, office or desktop use. Rapid 30-60 second binding cycle with one-minute heat up. HeatGuard technology reduces surface heat so binder is always safe to touch. Indicates when machine is ready and beeps when binding is done. Auto shut-off safety feature prevents overheating. Folds flat for storage. Binding Spine Type: Thermal; Binding Sheet Capacity: 300; Punching Sheet Capacity: N/A; Maximum Binding Edge: N/A.