![[HK-639] HARKEN Standard Cam Base — Swivel, Bullseye](http://www.yachtparts.com.au/cdn/shop/products/639_50eae156-a3d5-4ef1-a1c0-1e7d7d4a932f_1024x1024.png?v=1554367089)
![[HK-639] HARKEN Standard Cam Base — Swivel, Bullseye](http://www.yachtparts.com.au/cdn/shop/products/639_50eae156-a3d5-4ef1-a1c0-1e7d7d4a932f_480x480.png?v=1554367089)
The 639 is a simple swivel base for main and jib sheets on very small boats or for control lines on boats of all sizes.
The 639 is a simple swivel base for main and jib sheets on very small boats or for control lines on boats of all sizes.