The Hillman Group 47869 5/16-Inch x 3-Inch Star Drive Construction Lag Screw with Truss Head 1000 Hour Bronze Ceramic Coat, 30-Pack The product is 30PK 5/16x3 Lag Screw Easy and simple use kit The product is manufactured in China No pre-drilling Star drive helps eliminate campout Ideal for decks, stairs, play sets and many other outdoor projects