Item Number: Stnd1/2x24 This bungee is suitable for airplanes in the 1 to 10lb. range depending on wing area. It will launch a 1lb. small plane at speeds over 100mph., or a large 14lb. plane at about 25mph. This size is the most popular and is also used as a zip start, or Zip/Zoom for most open class gliders . Note: Product does not include the winder shown in the picture because the shipping costs outweigh the cost of the item.

Mega Bungee set up as a Zip Start Item Number: Mega5/8x24 This is suitable for airplanes from 10 to 20lbs. and is also used as a "Death Match" bungee for open class gliders. Note: Product does not include the winder shown in the picture because the shipping costs outweigh the cost of the item.

Insane Mega Bungee set up as a Zip Start Item Number: Ins3/4x24 This bungee is for 20lbs and beyond, it can develop over 80lbs. of launch force. Also used in a Y configuration for practicing F3J launches.