It is gratifying to be able to fix a problem without having to run to the hardware store, especially problems that surface at the most inopportune times. Why bother wasting time searching for the correct type of spring at the store when you could have your own set at home? The ABN Compression & Extension Spring 200 pc Assortment Set, Heavy-Duty Steel Wire – Metal Tension Springs Replacement Kit includes both compression and extension springs to save you time searching for that one spring. Replace rusted or missing springs with these strong steel springs in any shop or household application. This package includes 200 springs in 20 different sizes (measured from loop end to loop end; not just coiled part) and styles packed inside a transparent plastic storage case for your convenience. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.