Hooyman Slim Fiberglass Post Driver. The fiberglass post driver allows you to easily insert fiberglass posts into even the hardest dirt. Equipped on the side of the post driver is an extractor key that allows you to easily remove posts from 3/8 to ? even U post by inserting the post canting the Hooyman Fiberglass Post Driver and pulling upward. Splintered fiberglass and handles slipping upon removal are a thing of the past. Specifications for Hooyman Fiberglass Post Driver: Manufacturer: Hooyman Length: 29 in Fabric/Material: Steel Handle Material: Fiberglass Handguard Length: 15.6 in Features of Hooyman Fiberglass Post Driver STEEL CONSTRUCTION NO SLIP H-GRIP HANDLE EASY POST EXTRACTOR KEY Package Contents: Hooyman Fiberglass Post Driver Hooyman 1139426: Slim Fiberglass Post Driver