Abstract: A shear device includes a hand grip and a handle pivotally coupled together. A bar has one end pivotally coupled to the handle. A cutter blade has a middle portion pivotally coupled to the hand grip and has a pin secured to one end. A lever has one end pivotally coupled to the hand grip at a pivot rod and has the other end pivotally coupled to the bar at a pivot pole and has a groove formed in the middle portion for slidably engaging with the pin. The pin is disposed between the pivot pole and the pivot rod for allowing the cutter blade to be rotated with less force.

Abstract: A pruning shear device includes a hook formed on the upper portion of a handle for engaging with a tree limb. A bar has one end pivotally coupled to the handle and bar an oblong bole. A cutter blade is pivotally coupled to the handle and has a free end slidably engaged in the oblong hole of the bar. A lever has one end pivotally coupled to the handle and a link pivotally couples the middle portion of the lever to the bar for allowing the lever to rotate the bar and the cutter blade with less force.

Abstract: A garden shear includes a cutting blade formed on a lever. A plate is pivotally coupled to the lever and has a cutting blade for acting with that of the lever. The plate includes one or more engaging notches formed opposite to the cutting blade. A beam is pivotally coupled to the lever and can be moved toward and away from the lever. A hook is pivotally coupled to the beam for engaging with the plate and for moving the cutting blades away from each other. An arm is pivotally coupled to the beam and includes one end for engaging with the engaging notches and for allowing the cutting blades to be moved toward each other step by step.