The Large Loop from Magnawave is a 2-plug PEMF attachment, perfect for use on horses, pets, and other animals. This versatile attachment comes standard with most MagnaWave machines because it's a staple for sessions on a variety of animals. Use them to target areas such as the shoulders, neck, abdomen, legs, and hips - the large loop can do it all! This loop has a 12-foot lead and measures 15 inches in diameter.