VEVOR Spring Wire and Lock Channel, 6.56ft Spring Lock & U-Channel Bundle for Greenhouse, 40 Packs PE Coated Spring Wire & Aluminum Alloy Channel,Plastic Poly Film or Shade Cloth Attachment with Screw 40 PCS Spring Wire & U-Channel Aluminum Alloy Material PE Covered Wiggle Wire Easy To Install Sturdy & Stable Wide Application Channel Thickness: 1/16"/1.5 MM,Channel Length: 6.5 FT/2 M,Lock Channel Material: Aluminum alloy,Spring Wire Length: 6.5 FT/2 M,Model: YMCT-2011,Channel Width: 1.25"/3.2 CM,Quantity: 40 pcs each,Wiggle Wire Material: PE and iron