Check the listing for details. Berkeley PUDDLE JUMPER Sr & PROFILE 1/2A PLANS to Build TWO UC Model Airplanes. Condition: New. Listed at 22.95 USD. I AM NOT SELLING A KIT, only 2 new, full-size Berkeley kit PLANS to build BOTH a 25" span SENOR PUDDLE JUMPER UC stunt model & a 19" span 1/2A PROFILE PUDDLE JUMPER for yourself. Any .09 - .15 will be fine in the SENOR PUDDLE JUMPER & O.K. Cub .045 or Cox Pee Wee .02 will work for the PROFILE PUDDLE JUMPER. My last picture shows you how badly the balsa in Berkeley kits was way back when these kits were sold. We called them "die-crushed" not die-cut parts. Berkeley never sharpened the cutting dies so crushing of the soft balsa they used was the result. So some kids went to the hobby shop and bought new balsa sheet and used the "crushed" parts as patterns. In my case, I was too young to know this and I built my model from the die-crushed wood parts. I'll never forget my 1/2A PROFILE PUDDLE JUMPER model when I went out to fly it. As I flipped my O.K. Cub .049 over for a start, the nose snapped right off at the leading edge of the wing! So, please reinforce that nose section with a thin sheet of plywood from the firewall back over the leading edge of the wing.