Turnbuckle Eye & Eye - 8mm - Stainless Steel Marine Grade 316 Stainless Steel 8mm Eye & Eye Turnbuckle. Used for a wide variety of commercial tensioning applications. 8mm European Style Open Body Turnbuckles - Stainless Steel Marine Grade 316 material. Complete with locking nuts. MSRP: Was: Now: $6.46 Add to Cart