Insaga 18" Ground Anchors – 12mm Solid Steel Screw-In Stakes, 6-Pack with 3" Spiral Blade and Removable Eye

Insaga 18" ground anchors are rugged screw-in earth stakes engineered to lock trampolines, sheds, carports and temporary structures firmly to the ground.

These heavy-duty anchors combine 12mm solid steel construction, a 3" spiral blade and a fully welded eyelet to deliver dependable holding power in loose to compact soils. Each anchor measures 17.5" overall with a 15" bury length and ships with a removable eye and a 14mm socket so you can drive them quickly by hand or with a power driver. Sold as a 6-pack, they’re built for repeat use and repositioning when you move outdoor equipment or seasonal structures.

How do these anchors keep a trampoline or shed steady?

The deep spiral blade bites into soil to resist uplift and lateral movement, and the wide welded spirals create more surface area for soil grip than narrow stakes. The removable eye allows you to use a socket driver to spin the anchor down efficiently and then reattach rigging for tie-downs.

• 15" ground penetration gives strong hold in typical yard soils.
• 3" spiral diameter increases soil contact and pullout resistance.
• 12mm solid steel shaft resists bending under tension.
• Removable eyelet accepts ropes, straps or cables once installed.

What tools and steps are needed to install or remove an anchor?

Installation is straightforward: unscrew the eyelet, fit the supplied 14mm socket onto the anchor head and drive it into the ground with a hand wrench or impact driver. To remove, unscrew the eye, insert a lever into the top ring or attach a lifting tool, and rotate or pull out—no digging required for most soils.

• Includes 14mm socket for quick power-driver installation.
• Eyelet unscrews to enable mechanical driving and repositioning.
• Suitable for hand tools or cordless impact drivers for speed.

Which soil types work best with these Insaga ground anchors?

The wide, 3" spiral blade performs best in loose to moderately compacted soils—loam, sandy loam, gravelly topsoil and mixed garden dirt. In very rocky or extremely hard-packed clay, pre-drilling or alternative anchoring solutions may be needed for clean installs.

• Excellent in sandy and loamy yard soils for high pullout resistance.
• Gravelly soil benefits from the spiral’s displacement action for grip.
• Hard clay or bedrock may require pilot holes or different anchors.

How durable are the anchors and how should they be maintained?

Constructed from 12mm solid steel with a chrome-plated finish and full welds on the spirals, these anchors resist bending and corrosion for long-term outdoor use. Periodic rinsing and inspection for rust or bent sections will extend service life; lightly lubricate threads of the removable eyelet if they stiffen.

• Chrome plate provides basic corrosion resistance for outdoor seasons.
• Full welded spirals minimize failure at the blade-to-shaft junction.
• Inspect and clean threads after heavy rain or winter storage.

Who this is for: Installers, homeowners and DIYers who need a reliable, reusable anchoring solution for trampolines, mobile homes, swing sets, dog kennels, garden structures and temporary carports. If you want a compact, straightforward anchoring system that installs quickly with a 14mm driver, offers strong pullout resistance, and can be repositioned seasonally, this 6-pack from Insaga gives practical, heavy-duty value for most residential and light-commercial outdoor uses.