Columbia River Knife & Tool - Hitchcock Hole in One Folder Knife: Model CR-5150. 5 1/4" closed folder. 420 J2 stainless construction with bead blast finish. Blade features finger hole and multiple machined hole cutouts. Unique blade locking mechanism provides 12 locking points for strength and security. Locks in both open and closed positions. When the knife is gripped tightly during use, the lock also grips tighter for increased safety. To open the blade, press the lock release lever, and rotate it to either side. Continue rotating until the lock snaps firmly into place in the open position. Integrated spring-loaded (non-weight bearing) carabiner. Carabiner gate may be used as a bottle opener. Tom Hitchcock design. Made in Taiwan.