The only Kershaw I have is a 1600 Chive which has been on my desk for going on 20 years and has opened innumerable clam-shells and vacuum-packs from most every online retailer. Its assisted opening and the lil speedsafe slider is used everytime I move it to deal with cardboard boxes to recycle. No better option I have found for it. The Smith’s handy knife sharpener tunes it up with little effort. Hardy recommendation.