Originally established in Fremont California in 1972 by Steve Goldstein, and currently located in larger facilities in Herald, California, GKL Products has been developing both residential and commercial products for the lock and security industry. Our "flagship" product, the Hinge Doctor, has been an effective and unique tool in the restoration of door hinges and has lead the way to new product development and release.
- PO Box 533
- Herald, CA 95638
- Phone: 209-748-2400
- Toll Free: 888-446-4337
- Fax: 209-748-2405
- Website: http://www.gklproducts.com
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