Estone Black Fender Stratocaster Pickup Covers 50 or 52 mm Pole to Pole Knobs Tips New For Stratocaster style guitars It will fit a variety Stratocaster style guitars made by various manufacturers, including Fender Squiers. Switch tip designed to fit the thinner type of switch blade, (may not fit some some USA Strats fitted with a Oak Grigsby Switch) From the first Center hole distance to the forth center hole distance : 52mm or 50mm or 48mm Length for the Slot of Switch Tip : about 4mm Please check the sizes seriously before you buy the item