1、SK5 Blades: This electric pruning shear uses SK5 high carbon steel blades, which are incisive and durable, can easily cut branches up to 1.2 inch, greatly improving pruning efficiency. 2、Extension Pole: This kit is equipped with a telescopic extension pole, which can extend from 4.1 feet to 7.21 feet in height, meeting the needs of high branch pruning, no need to climb a ladder. 3、Labor Saving Design: The cordless design and non slip rubber coating make it comfortable to grip and easy to carry, this cordless branch shear can reduce fatigue on the hands, arms, and wrists. 4、Applicable Battery: This cordless pruner is powered by a 21V lithium battery (not included), suitable for BL1830B BL1840B BL1850B BL1860B BL1815 BL1820 BL1825 194309‑1 194205‑3 battery. 5、Safety Switch: You need to start pulling the trigger twice, with a green light on and a beep sound. Press again to start working. If the trigger is not pressed within 60s, the pruner will enter automatic sleep mode.