ITEM NAME:Bow Stern Eye U Bolt 5/16" Stainless Steel Boat Marine M8 Description: - 100% Brand new and high quality. - Reliable and durable:made of stainless steel - Lightweight and durable - Easy to use - Suitable for boats/yachts/Car/trailer Specification: M8 Boat U-Bolt - Length: 3.93" (100mm) - Thread Lenth: 1.96" (50mm) - Diameter :0.31" (8mm) M10 Boat U-Bolt - Length: 4.84" (123mm) - Thread Lenth: 3.15" (80mm) - Diameter :0.39" (10mm) M12 Boat U-Bolt - Length: 6.10" (155mm) - Thread Lenth: 3.54" (90mm) - Diameter: 0.47" (12mm) Package Included: 1 Piece Boat U-Bolt Note: 1. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm).M8 Boat U-Bolt. M10 Boat U-Bolt. M12 Boat U-Bolt. 1 Piece Boat U-Bolt. - Length: 3.93" (100mm). - Thread Lenth: 3.54" (90mm). - Length: 6.10" (155mm).