The Bear Edge 61121 Assisted Opening Linerlock Knife is a 4.875" Black & Red Assisted Sideliner. The Hollow Ground 3.375" Tanto Blade is made from 440 Stainless-steel with a Black Powder Coating Finish to prevent rusting. The spring assistance along with pushing up on the Thumb Studs allow for a smooth and quick opening of the Bear Edge. Logo engraved Blade. To make opening even easier, Pattern 121 also features a Blade Trigger that allows for a fast action opening. The Bear Edge. Pattern 121 features a Sideliner Lock that ensures the Blade will remain firmly in place once opened and is easy to close. Jumping is present on the top of the Blade and handle for a more secure grip. The Black & Red Aluminum Handle features a Bear Edge. engraved Reversible Pocket/Boot Clip for Tip-Up Carry and quick access for either the left- or right-hand carry. A Glass Breaker is also on the back of the Blade for use in emergency situations and a lanyard hole is present for secure fastening and storage. The Bear Edge. Pattern 121 weighs 3.9 ounces and is proudly built in the USA.