Interchangeable head design. Keep the handle, replace the blade! Titanium coated blades available in both standard two sided and standard single sided heads. Ergonomic 'Soft Touch' handle reduces hand fatigue and stress. Recessed blade prevents contact with fingers, reducing costly injuries. Recessed blade prevents contact with contents, reducing expensive product damage. The Klever XChange Standard Double Wall Head is for job sites that deal with double wall cardboard on a regular basis. The heavy duty blade delivers great performance.