Red Hound Auto 2 Stainless Steel DIN 580 Machine Shoulder Lift Eye Bolt M10 316SS Marine 10mm 2 - M10 Eye Bolt Ring Thickness: 10mm. Outside Diameter: 45mm. Inside Diameter: 25mm. Height: 62mm. Perfect for many marine and industrial applications. 316 STAINLESS STEEL - FINEST MARINE GRADE STEEL AVAILABLE! Heavy duty and weather-resistant, will not rust