Robart 1/2" (12.7 mm) diameter RoboStruts are made for giant size airplanes weighing up to 26 pounds. With real functional oleos and torque links, that can be used on grass or paved airfields.
Can be used with the retract systems from Electron.
from real aircraft grade materials, welded and heat treated components, these
struts come with easy to use 1/4” inch (6.35mm) dia. wire adapter, Designed for
use in the large line of Robart landing gear, they are also the best
replacement struts for all other makes of retracts that have a 1/2” (12.7mm)
strut socket type retract units. These RoboStruts are available in straight,
right or left offsets (up to a 5 1/4” dia. wheel), and a fork style oleo.
Link to dimensions of the Robart strut: 672-12-Dia-Strut