Five33 RipsticksTired of your fingers slipping when you fly? Nervous sweats on the start blocks making you lose your grip? Inverted yaw spins causing you to fly off the stick? That's why the Five33 lads came up with Rip Sticks! Replacement stick ends just simply screw onto any radio with a 4mm thread (like the RadioMatser T16S and many other) to give more grip when you need it. Pick the right one to suit your style.