Cylindrical Lock

Allegion:

http://us.allegion.com/IRSTDocs/Catalog/106501.pdf

http://us.allegion.com/IRSTDocs/Catalog/110449.pdf#page=18

http://us.allegion.com/IRSTDocs/Catalog/110449.pdf#page=52

http://us.allegion.com/IRSTDocs/Catalog/106479.pdf

Assa Abloy:

http://www.corbinrusswin.com/en/site/corbin-russwin/library/catalogs/cylinderskeyring/

http://www.sargentlock.com/documents/index.php?cat_id=71

Stanley Hardware:

http://www.bestaccess.com/products/cylindricallocks9k.asp

http://www.stanleycommercialhardware.com/pdf/STCH_CATALOG_ST-CH-0005_WEB.pdf