Lightweight machined aluminum body. Easy lock-down and adjustment mechanisms allow horizontal & vertical adjustment. Will not slip. Fingertip adjustable, lightweight stainless steel Speed Fin cradles the arrow at four points of contact. Serving as the lower Speed Fin, the Bodoodle Buddy Speed Fin provides a fixed, 2-point cradle of contact. Includes super stick tape, colorless tape ensures quiet, friction-free shooting when wrapped around the tips of Speed Fins