Have endured over 50 years giving reliable performance. Has the traditional good holding power which has always been associated with Danforth Standard anchors. The shank is made of high strength steel. The steel flukes are strong and wide. Each anchor has a hot dipped galvanized coating for long lasting protection. Model 4S Weight 5 lbs. Holding Strength 300 A 19-1/2" B 14-3/4" C 10-1/2"