The Nock On Arrow Lube Tube is a must have on the range. By simply inserting your arrows into the Lube Tube, a thin layer of full synthetic arrow lube is applied to the front part of the arrow shaft and point. This very thin layer of lube allows the arrow to easily pull from targets. It is especially effective for those hard to pull targets, especially 3D foam targets. The Nock On Arrow Lube Tube kit comes with a Lube Tube with a clip for a quiver, belt, or backpack. You can also clip the Lube Tube to a Nock On Mag Clip for easy on and off to share the Lube Tube in your shooting group. It comes standard with a bottle of the synthetic arrow lube for up to 3 refills.