Nightwingology on X: The gauntlets also replace the separate grappling hook launcher tool by building it into the glove. They fire a near unbreakable prometheum hook and cable. The cable launcher has

Nightwing 1: Leaping into the Light: 9781779512789: Taylor, Tom, Redondo, Bruno: Books

Miller® TurboLite™ Retractable Webbing Lanyard with Snap Hook - 6' H-5129 - Uline

What's the closest thing to Batman's grapple gun available in real life? - Quora

Nightwingology on X: @KG_KingKuro @bluearcher1600 Used to be his gauntlets had the grapple launcher, like here in Nightwing vol. 2 #142. Most recently, in Nightwing vol. 4 (the current volume) his sticks

ArtStation - Grappling Hook and Grappling Gauntlets.

A wrist mounted line launcher that someone created for the batman franchise. (therpf.com, 2011)

Nightwing 1: Leaping into the Light: 9781779512789: Taylor, Tom, Redondo, Bruno: Books

Grapple Glove, Fortnite Wiki

Realism of the Grappling Hook – The SMCC Beacon