The function of the brake pad spool is to transform the movement of the brake cable into a rotation that separates the brake pads inside the drum. When you apply the brake, the cable pulls on the spool, which rotates and separates the pads, causing them to press against the drum to create friction. This friction is what reduces wheel speed and stops the motorcycle. The spool is made of steel and durable materials. If the spool is not in good condition, braking can become uneven, so its maintenance is important for your safety. Invest in your safety, keep your brake pad spool in good condition, and enjoy every mile with peace of mind.