ViiRO Universal Speaker Mounting Brackets Black - Sold In Pairs - Suit up to 7.7lbs / 3.5kg Speakers Tilt and swivel movement for optimal mounting. Adjusting knob for tool-less way of adjusting speakers. Easy to install and mount speakers, comes with mounting hardware including a M5 (5mm) Bolt for mounting speakers. If you speakers have a single rear bolt mount and weigh less than 7.7lbs (3.5kg) this will be suitable.