OFNA Racing 5x40mm Turnbuckles, Silver (2) Ofna 5x40mm Turnbuckles are constructed of silver steel. INCLUDES: Two threaded steel turnbuckles. REQUIRES: Assembly on vehicle. SPECS: Length: 35.4mm (1.39") Diameter: 5.0mm (.197") COMMENTS: These turnbuckles have a 7mm sqaure center section for easy adjustment