Description:Material: These Protection Caps are plastic insulation material, outdoor poles from lightening conduction, very use the canopy, it from falling off the top thimble, jacking up the canopy, can resist the middle of the awning to collapse, the service life of the.: The diameter is 3cm, and the height is 4.5cm, simple and to install, one handed operationApplications: Universal Fixing the tent, canopy, awning, extension awning lifespanOccasions:This Insulation for outdoor camping, hiking, patio tent canopy usingSpecification:Material: PlasticHeight 4.5cm/1.77inch Diameter 3cm/1.18cm Includes:4 Pieces Insulation Protection CapsNote:1. Please allow slightly error due to manual measurement.2. Due to the difference between monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful shopping!