The Batrope is a tool used by the Bat Family for climbing and swinging from buildings primarily. The traditional method was for Batman to attach a line to one of his Batarangs, which would serve as a grappling hook after being thrown.
In modern times Batman is more commonly seen using Grapple Guns and zip-line gadgets.
The Batrope (or Bat-Line) is a length of monofilament wire attached to a spool concealed within a compartment on Batman's utility Belt. It is used primarily for scaling the sides of buildings and ensnaring targets. Many of Batman's allies also use Batropes including Batgirl, Nightwing and Robin. Although Batman's lines are famously durable, exotic weaponry can cut through it, including Batarangs.
- This method for scaling buildings has fallen out of fashion in modern Batman media, but still makes appearances. The Grapple Gun used by Michael Keaton in the 1989 Batman movie was very popular and its impact on the mainstream comic continuity was immediate. Batman fired a grappling hook pistol for the first time in November of that year, in Batman #441. As time went on this became far more common than the traditional batrope and batarang.