A deeper 15" hammer-in socket for extra holding power, this ground anchor keeps a 1" pole system upright even in loose or sandy soil.Steel construction with a corrosion-resistant finish is designed to be driven in and pulled up season after season.Key Features 15" hammer-in depth: extra holding power over shorter sockets. Fits 1" diameter poles: purpose-built for Erva's pole system. Steel construction: corrosion-resistant powder-coated finish. Reusable installation: pole lifts out for winter storage. Stops pole lean: ideal for loose or sandy soil. Made in USA: manufactured by Erva in Chicago, Illinois. Specifications Depth 15" Fits 1" diameter pole Material Powder-coated steel Made in USA Tip: choose this deeper socket over the 12" version for sandy or loose soil - see our pole hardware.