Professional Answer: A cable pulling guide, also known as a cable roller, corner sheave, or cable guide roller, is a piece of equipment used to smoothly and safely direct cables through a path during installation. It is an essential tool that ensures the cable does not get damaged by friction, sharp corners, or obstacles. While the term "cable pulling guide" can refer to a general set of best practices, it most often refers to a physical tool that provides a controlled pathway for the cable. Using our robust cable guides from Ningbo Changshi, you can significantly reduce friction and prevent the cable from exceeding its minimum bending radius, which is a common cause of costly cable damage.