The Grappling Hook is made from rezistant materials and is designed to be used for entry and egress in a MOUT (Military Operations in Urban Terrain) environment and also for trip wires, concertina and minefield clearing. This device can also be used for climbing. This is made from 7075-T651 aluminum, Mil-spec black anodized.

Materials and components
3 Tines(Arms): 3/16" plate* with 3/8" stainless pins
Shaft: Cut and machined 1" solid rod*
Base: Machined 3/4" plate*, secured with a 1/4" stainless pin
Spring Housing: Machined 5/8" plate
Pins: Machined (303) stainless steel with 125, 000 psi tensile strength
Overall Rating: 1650 lbs
Net weight: 0.71kg

Dimensions
Closed: 10" x 4" (with shackle extended)
Open: 10" x 11" (with shackle extended)
Weight: 1.512 lbs