Vissipe supplies Motorsport Harness Mounting Kit allows the safe and correct mounting of motorpsort harnesses as per FIA and MSUK regulations. The eye bolts allow you to adapt your car and locate your harness bolting points where you require them. These are heavily used by those wanting to build cars for track or racing days but can be used and fitted to road cars. Standard eye-bolt diam. 7/16 UNF thread length 23 mm, 25 mm tot. 8.8. Backing plates: Race Safety Accessories stress plate with a 7/16" UNF thread to accept an eye bolt. For mounting harnesses with eyebolt attachments. Dimensions: 65 x 65mm FIA and MSUK compliant. As stated in MSUK (K) Safety section. all harness mountings must be 7/16 thread and with a backing plate and corresponding nut of 7/16 thread.