This Dahle Premium Rotary Trimmer features ground, circular upper and lower blades, which are self-sharpening for smooth, precise cutting. Ideal for heavy duty use, the cutting blades are fully enclosed in a plastic housing for safety. The trimmer also features printed guidelines for accuracy. This A3 trimmer has a cutting length of 510mm and a capacity of up to 30 sheets. Size: A3 Capacity: up to 30 sheets (80gsm) Cutting length: 510mm Ground circular upper and lower blades are self-sharpening Printed grid for accurate trimming Cutting blades are fully enclosed in plastic housing for safety For heavy duty use