Description:coarse thread galvanized screws, tourque head screws work very well.

Wind-Lock Sureset Grappler
Wind-Lock Corporation
1055 Leisz's Bridge Road
Leesport, PA 19533
800-872-5625
www.wind-lock.com

Dur-O-Wall
Dur-O-Wall
4260 Westbrook Drive, #120
Aurora, IL 60504
877-851-8400
www.dur-o-wal.com