The Castor is a six button multi-colour optical right-handed ergonomic gaming mouse. For those of you who prefer a palm grip it’s awesome, unless your hand is a too big. We found it just a little small for a perfect palm grip and used more of a finger-tip grip, which isn’t that big of a deal to us but to some it may be a deal-breaker. If not you’ll love the dedicated pinky- and ring-finger support-groove.
