Regarding the installation center distance L:
Please place the supported object in the desired position and measure the distance between the two installation points.
Regarding itinerary S:
The distance between the installation points at both ends when L-S is in the closed state is sufficient.
Regarding pressure N:
For example, if the weight to be lifted is 60KG, then using one gas spring to support it requires a pressure of 80KG (approximately 800N), which is 60/3 * 4. If using two gas springs to support it, each one should be 400N.
Regarding connector selection:
There are generally 6 types of commonly used connectors -2 flat heads for bed use, equipment, etc; Choose nylon head or 1 ball head for automotive use; Window display with 4 flat heads; Truck Wings Choose 6 Double Fork Heads
 
 
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Package Including:

According to your choice.
 
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Shipping:
We Ship to Worldwide.
Orders processed within 24-48 hours of payment verification. it will take 15-25 days for delivery. but Customs will random inspection some parcel, so that's why some parcel need more than four weeks to arrive. Shipping time is only estimated and not guaranteed.
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Package to USA will Shipping by E-Package with Tracking Number(7-15 Days to Delivered). To other Countries will shipping by Post Air Mail without tracking number(ONLY when the order is over 20USD will supply Tracking Number Shipping Way!)(15-35 Days to Delivered)
Items are shipped via China Post Air Mail.
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Not accept returning of electronic components.
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