1.MATERIAL:The greenhouse twist clamp kit are made of high quality PP material,Wear-resistant,corrosion-resistant and durable. 2.HOW TO USE:Just combine the fixing clip gasket and the extension clip together, insert the greenhouse film into the greenhouse roof channel, and tighten it to install. The L-type corner extender clips can be used in some greenhouses where the angle groove is inconvenient to enter.(The gasket can prevent the insulating layer from tearing), the installation process saves time and effort, and no other tools are needed. 3.FUNCTION:The insect-proof net and the sunshade net can be fixed on the bracket to avoid the damage of the sun, rain and snow, and create a better growth environment for the plants; heat insulation and sunshade,suitable for fixing bubble film in winter and fixing sunshade in summer. 4.APPLICATION:It is used to fix the greenhouse thermal insulation bubble film, film, anti-bird net, sunshade net and screen on the aluminum greenhouse trough rail. And it will not damage these appliances, easy to disassemble and assemble, it is a good choice for greenhouses 5.PACKAGE:100pcs clips+100pcs washers+50pcs T-type extender clips+50pcs L-type corner extender clips.The quantity and style are enough for your greenhouse to use and replace, which can cope with various scenarios. Material:PP Color:Green Weight:328g