Maratac Pocket Grappling Hook. 300 series stainless spikes. These hooks are not certified for life support activities and should not be used for any life support function. They are designed to pull trip wires and for horizontal use. 1" x 5.5" stowed. Collapsible. Bulk packed. Specifications for Maratac Pocket Grappling Hook: Manufacturer: Maratac Color: Stainless Blade Material: Stainless Steel Weight: 0.32 lb Package Contents: Maratac Pocket Grappling Hook