 Most Floyd Rose bridge designs have two pivot screw cutaways that are limited to the width of the pivot screws, and these will not fit the System 1 pivot screw spacing.Some models exported to UK were fitted with Kahler Traditional Series tremolos, stamped "Made in the USA", and supplied with the American Precision Metal Works, Inc. set-up instructions and Allen keys.The pickups used in the Contemporary models were manufactured by Fujigen.