Fishbone shims are a must for trail riders and rock crawlers. They give your drive line a better angle, helping keep your U-Joints in tip top shape.
Features:

• 2.5 Degree Shim (2.5 inch Spring)
• Fits 2.5 inch Springs
• Black Powder Coated Steel
• Sold as a pair
• Easy to install
• Helps prolong U-Joints
• Less strain on drive line components
• Smoother drive