Marine M5 Female Thread Metal Lifting Eye Nuts Ring 10pcs Thread Diameter (d1): M5 (Female); d2 Size: 12mm/ 0.47" (Dia.); Eye Size: (d4 x d3) 12x22mm/0.47" x 0.87" (Inner D*OD) Ring Thickness: 5mm/ 0.2"; Thraed Length (e): 5mm/ 0.2" Main Material: Metal; Package Content: 10 x Lifting Eye Nuts Product Name: Lifting Eye Nut; Weight: 99g Main Color: Silver Tone; Total Height (h): 22mm/ 0.87"