H2.5A Hurricane Tie, Designed For Easy Installation, Designed To Help Counter Extreme Winds Generated By Nature, Provides Resistance To Uplift & Lateral Forces, Install In Pairs To Connect 2 x Rafter To Top Plate, Install With Five 8D x 1-1/2" Nails To Rafter, 5-8D x 1-1/2" Nails To Plate.