ChrisNik Mag Spike – 3/8″ × 8″ (Box of 20) The ChrisNik Mag Spike 3/8″ × 8″ is designed for deep, highly secure survey monument installations . Constructed from magnetized premium steel with a zinc-coated corrosion-resistant finish , it offers exceptional durability and easy recovery using magnetic locators. The extended 8″ length provides maximum holding power in loose soils and challenging ground conditions. Each box includes 20 spikes . Key Features • 3/8″ × 8″ magnetized survey spike • Heavy-duty premium steel construction • Zinc-coated corrosion protection • Magnetic design for locator detection • 1″ diameter head with center point for precise reference marking • Packaged 20 spikes per box Ideal For Surveyors and contractors installing deep control points, boundary monuments, and long-term reference markers where maximum anchoring strength is required.