Hayabusa Double End Heavy Bag Hanger AnchorHayabusa Double End Heavy Bag Hanger Anchor Anchor your training bag in minutes. The Hayabusa Double End Heavy Bag Anchor fastens to any punching bag to provide maximum stabilization; you only need water or sand. Its large bladder holds up to 25kgs of water, the perfect weight to anchor a double end bag or prevent your heavy bag from swaying. Constructed from heavy duty canvas fabric, with reinforced nylon webbing and a sturdy triangular D ring on top