This Replacement Rubber Kit will rejuvenate and keep your hydrometer set in good working condition. Use this kit to replace cracked and dry-rotted rubber on your #1 Battery Hydrometer. This item is not intended for use with other brand testers. For best results, use only Brady Instruments brand testers.
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HAND-MADE, PRO-GRADE & USA-MADE
Check out the pdf below for more information on assembly:RubberKitInstructionsWEB