Get the right parts you need for your garage door from North Shore Commercial Door, including garage door extension spring accessories. We carry a variety of garage door sheave pulley kits in various sizes to fit most doors. We also have all the little parts you need, such as extension spring eye bolts and S-hooks, cables and cable clips. If you don't see the garage door parts you need, contact us. We're a family-owned business with 35 years of experience with garage doors and our expert staff will help you determine what you need. We have most parts in stock in our 80,000-square-foot warehouse, but if we don't have it in stock, we can get it for you. Call us at (440) 365-5707 between 8 a.m. and 4:30 p.m. Eastern Time weekdays or contact us online, any time day or night. Our prices are low, our shipping is fast and our advice is free.