Audioserenity ISO 9H Set of 4 Spikes M8 Floor Mount Speaker Subwoofer

M8 (8 mm) diameter equipment spikes, washers and lock nuts Total Length of Spike inc thread: 43 mm Supplied as a pack of 4 (See other listings for packs of 8) Colour: Black Material: Steel Question: How can I tell if these (M8) are the right size for my equipment? Answer: The vast majority of equipment uses either M6 or M8 threads. To check suitability, measure the hole on your equipment. If it is about 5mm in diameter, then you will need M6 Speaker Spikes. If the hole size is closer to 7mm in diameter, then you will need the M8 Speaker Spikes. (See our other listings for AudioSerenity M6 Speaker Spikes)