**Product Description: Pulley Conversion Kit for Suntour and Simplex Derailleurs** - **Fitment**: This pulley conversion kit is designed as a replacement for Suntour and Simplex derailleurs that utilize 6mm outside diameter jockey wheel bolts. Ensure compatibility with your derailleur model for optimal performance. - **Premium Material**: Crafted from high-quality steel, this conversion kit offers exceptional durability and stability. Built to last, it provides long-term reliability for your cycling needs. - **Detailed Features**: Includes a new set of replacement rear puller guide wheels or pulleys, specifically designed to fit vintage Suntour models. These components help maintain the efficiency and smooth operation of your derailleur system. - **Fine Workmanship**: Professionally manufactured with exquisite craftsmanship, this kit boasts a unique design that ensures stable performance and high reliability. Trust in its quality to enhance your bike's functionality. - **Easy Installation**: The kit is designed for straightforward installation without the need for complicated tools or drilling. No modification is required, making it convenient to use and saving you time and effort. Upgrade your cycling experience with this durable and efficient pulley conversion kit. Ideal for maintaining and enhancing the performance of your vintage derailleurs, it combines quality materials and expert craftsmanship for a reliable ride.