Side by side, there are a lot of similarities. However, the PRO420 is noticeably heavier and a little bit longer. The Pro 420 is easier to maneuver, offers a smoother cut and spring action, has a more solid spring compartment and has much more comfortable handles, with a TPR plastic grip on the side giving you more flexibility.
The PRO420 also has non-stick black blades, while the Fiskar’s brand offers no resistance to the sticky resin that the Cannabis plant is notorious for. Let’s put it this way, Fiskar’s are marketing a cheap blade for retirees to cut their roses and the PRO420 is delivering a solid professional product specifically for trimming marijuana. Not that we are bias or anything…