Ark

The Ark is a shoulder for your finger. The large curved surface gives your index finger a place to rest and lock in, while the open opposite side leaves the pen completely unaffected. That surface area is what makes it work. Your finger settles into it naturally, contact stays consistent, and your grip stops moving around without you actively holding it there. Compatible with the Blueberry grip. Attaches and detaches to your pen in seconds. No tools or adhesives required. Watch the installation video before first use to avoid damage to the insert or your pen. Pen not included.