The oil within the cylinder, when it is compressed or extended, moves from one side of the piston head to the other, providing a damping effect. PLACE the scale at the point the strut connects to the door / lid (at the bracket).
2ea Nitro Prop Gas Strut Spring Shock Rep Weather Guard Tool Box OEM # 7250-2PK
2ea Nitro Prop Gas Strut Lid Lift Rod REP Knaack Storagemaster Tool Box Mod 79
2ea Nitro Prop Gas Strut Lift Rod Arm Fits Knaack Storagemaster 89 Tool Job Box
2ea Nitro Prop Gas Strut Spring Shock Support Lift Ram Rod Arm Fits SPD-2900-40
2ea Nitro Prop Gas Strut Spring Lift Shock Rod Fits Knaack Storagemaster Mod 91
2ea Nitro Prop Gas Strut Spring Lift Rod REP Knaack Storagemaster Chest Mod 90