Pulley

Pulleys (リール), also known as Upreel (アップリール) and Downreel (ダウンリール), are objects, which can be seen hanging on floating plates or set to the tensile panels on edges of steep slopes in zones or other places. Pulleys can help the player, as he can grab and then pull him up, thus helping him to the top of the slope. Sometimes pulleys don't pull down the reel unless the player has defeated all enemies on near by or they can be activated by pressing the switch. However pulleys can sometime have different purposes depending the gameplay style.

While originally first seen in Sonic the Hedgehog 3, pulleys have then become one of generally seen and used objects in Sonic Adventure 2 and have made appearances since then.