100% new and high quality. Application: Mini-rail for installation of trapezoidal photovoltaic panels on walkable trapezoidal metal sheet roofs with metal sheet . Good static load distribution. This type of installation reduces the suction effect of the weight of the PV system on the outer skin of the roof covering. No need to transport long profile strips, adjusted to the post spacing of the profile panels. Profile sections are pre-drilled and covered with sealing tape. Color: Black & Silver Material: aluminum alloy Package Contents: 6 x rails 4 x end clamps 2 x intermediate clamps Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.