The Bosch FSN OFA 32 KIT 800 Professional Guide Rail Kit contains: 1 x FSN RA 32 800 Professional Guide Rail for accurate hole layouts when building furniture. Enables accurate hole layouts when building furniture. It offers extensive functionality in addition to its standard feature set due to its 32-mm hole spacing layout. Length: 800mm. 1 x FSN OFA Professional Open System Adaptor for routing with guiderails. Suitable for a multitude of combinations between routers and guiderails. 1 x FSN KZW Professional Guide Rail Quick Clamps.