1.Used in RV roof solar module installation, yacht deck solar module installation and flat roof PV bracket installation. 2.The material is added with anti-UV agent and has UV resistance to no discoloration for a long period of time 3.Installed with glue, no need to punch holes during installation, will not damage the roof of the RV or the deck of the yacht 4.Easy to install and disassemble, convenient to use 5. and high quality size:115x95mm Material:plastic colour:Black Package Contents: 1x Roof Wire Entry Gland Box Only the above package content, other products are not included. Note: Light 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.