Brand New, Never used. Manfrotto G300 Sand Bag Large Black, Weight 1.5kg. Payload 35kg. Goes over a boom arm and you put weights in both side and strap them up. Made of durable black nylon for weighting down lighting stands, tripod legs or booms. Retails for around $130 new. Located in Black Rock VIC 3193. 
Pick up or post if buyer pays for postage
Guy 
Black Rock 3193
0414 927 967