X-Calibar Ultra-Lites

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Finally, no compromises, space age strength AND dramatic weight savings. The Ultra-Lite's unique one piece design delivers strength superior to steel for about 1/6 the weight. Takes the place of traditional backing plate and nut. Self-tapping. Made from a special nylon composite for superior strength. Will fit all sizes of push-through studs. Also available are heavy duty Ultra-Lites for 1.15 studs and longer.