Sting Snap Hook And Swivel Sting is an Australian owned boxing equipment company, that manufactures high-quality boxing equipment for fitness enthusiasts, all the way up to Olympics and professionals. From gloves to protective equipment, coaching products, accessories and punch bags; there is nothing like a Sting product. Constructed from some of the best materials with the latest design techniques you can rest assured Sting products will fulfil your sporting needs. FEATURES Use for mounting punch bags to bag mount Reduces stress on straps and D shackle