Chain Grip for 5/16" (8mm) ChainPerfect to ensure safe anchoring by easing the tension on the anchor chain. Protects the boat by reducing the chafe of the chain on the rub rail and roller chock. Positioned between two links of the chain (single-handed operation). Optimized design to avoid accidental release of the chain.Features:One-piece with nonmoving partsForged in Duplex stainless steel grade (increased mechanical & corrosion resistance)Made in FranceRope size: 22 mmSpecifications:Chain diameter: 8 mm (5/16")Rope diameter: 17 mm (5/8")Working load: 480 kg (1,050 lbs)Breaking load: 890 kg (1,960 lbs)Weight: 88 g (0.194 lbs)Length: 85 mm ( 3-11/32")Applications:Mouillage