From manufacturer:
OLFA's Deluxe Ergonomic 60mm Rotary Cutter is designed to reduce hand and wrist fatigue. Squeeze handle to expose blade for cutting. Blade self-retracts for safety when not in use. Dual-action safety lock allows the user to lock the blade open for comfort and closed for safety. For right-and left-hand users. Cuts up to 12 layers of cotton fabric and is great for heavy duty projects. It can also be used on foam, batting, fleece and a variety of other materials. This rotary cutter includes one RB60 blade. This package contains one 60mm rotary cutter. RTY-3/DX, 9655. WARNING: This product can expose you to chemicals including Di(2ethylhexyl)phthalate (DEHP), known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. Imported.