The storm collar is an indispensable component for any roofing project, providing an additional layer of protection water ingress. Compatible with drill tail screws, this collar is easy to install and ensures a tight seal around roof penetrations. Its sturdy construction and weather-resistant properties make it a reliable choice for safeguarding your roof from leaks and damage. Features -Color:Black -Material:Plastic -Size:7.50X3.00X1.50cm/2.95X1.18X0.59in -Note:drill tail screws(not included) - Water resistance: prevents water seepage with materials, keeping roofs dry and extending their durability -Improved sealing: enhances the sealing effect when paired with drill tail screws, ensuring a stable and weatherproof installation -Fast and easy setup: the installation process, reducing labor time and increasing overall efficiency - For renovations: allows for waterproofing upgrades on existing steel tile roofs without dismantling original tiles - performance: maintains excellent functionality in outdoor environments, reducing the need for frequent maintenance Package list: 200 x tile screw caps