SUITABLE SIZE: The package includes 4 packs of ground anchors. Each of them is 15 inches in length, 0.5 inches in thickness and 3 inches in screw diameter. It is compatible with the drilling machine which socket is 17mm. RUST-PROOF, ETCH PROOF DURABLE: The whole set of ground anchors is made up of solid steel together with a black coating outside, it is of rust protection and anti-corrosion. Due to the reinforced structure, the ground anchor can be used repeatedly for many times. EASY OPERATION: It can be divided into two modes: manual and automatic. There is a nut in the middle of this product. Hence, you can rotate and disassemble it without any difficulties. Moreover, youll find it way easy and safe to operate by using electric drill to insert the anchor into the ground. WIDE APPLICATION: With the ground anchor, it can be used in various scenarios: metal and wooden fences, dog kennels, sheds, car ports, gazebos, travel trailers, trampolines, cabins, garages, small buildings, amusement parks, childrens swings, childrens slides, canopies, camping, scaffolding etc. USER-FRIENDLY DESIGN: With the help of the drilling machine, the anchor can be penetrated into the ground like hard clay or rocky soils. All you need to do is fix the ground anchor on the drilling machine and mark an insertion point. Then press the button and the anchor can be swiftly drilled into the ground. In this way, it helps you save more time and energy. Feature: Easy Operation Wide Application User-Friendly Design Specification: Color: Black Material: Solid Steel Package: 4 * Ground Anchor