Iwuhooya Pulley Design Pruning Shears with Carbon SK-5 Steel Blade -Heavy Duty Garden Pruners,Hand Cutting Secateurs,Rose Clippers, Tree Trimmer Scissors Our garden pruner blade select top SK5 materials that keeps the edge for ages while ensuring unmatched durability,more durable and sharp than most manganese steel blade pruning shears Pulley design with a spring-loaded mechanism for labor saving cutting Ergonomic anti-slip handles are strong,lightweight and comfortable to hold Just pull down safety lock with your thumb ,it can be unlock with one hand easily If you intend to prune frequently, you'll appreciate the way that a pulley shears will reduce wrist strain, require less pressure to cut, and generally make the pruning experience much more enjoyable. If you do a lot of pruning, this can make a big difference in hand fatigue. Ideal if you are already starting out at a disadvantage with carpal tunnel or arthritis, or have smaller hands