Open Turnbuckle Eye/Eye DIN 1480

Material: Stainless Steel
Class / Grade: A4 (316) , Electro Galvanized

Size: 6,8,10mm - Dimensions indicate material cross-section and base length

These are also known as tensioners, turnbuckles, straining screws, adjusters, or barrel strainers. 

One end is right-handed and the opposite end is left-handed. You create tension by simply rotating the turnbuckle centre body.