Spring Tension Roller 1 in Nylon/Steel Prime-Line B 570 3-Pack 1x0.25x0.25 in The Prime-Line B 570 spring tension roller is a compact, high-performance component designed for smooth operation of sliding screen doors. Featuring a 1-inch diameter nylon wheel with a steel core and integrated spring tension mechanism, it ensures consistent pressure against the door track for stable, rattle-free movement. The ultra-low profile?just 0.25 inches in length and depth?makes it ideal for narrow screen door frames where space is limited. Constructed from durable nylon and steel, it resists wear, corrosion, and UV degradation, delivering reliable performance in both indoor and outdoor environments. Sold as a 3-pack (each pack contains three sets of 2 rollers, totaling 6 rollers), it provides a complete solution for servicing three standard sliding screen doors. All necessary hardware is included for quick, tool-free installation. Features - 1" diameter nylon wheel with steel core for quiet, smooth rolling - Built-in spring tension maintains constant contact with track - Ultra-compact design: 0.25" L x 0.25" H?fits tight screen door frames - Durable nylon resists cracking, UV damage, and moisture - Steel internal components ensure strength and longevity - Reduces door wobble, noise, and misalignment - Compatible with most residential sliding screen door systems - 3-pack includes 6 rollers (2 per door) for three full replacements - Includes all mounting hardware for immediate installation - Ideal for retrofitting worn or missing rollers in aluminum or vinyl doors Specifications - Brand Name: Prime-Line - Model Name: Prime-Line B 570 - Part Number: B 570 - Product Type: Spring Tension Roller Assembly - Material: Nylon Wheel, Steel Axle and Spring Mechanism - Diameter: 1 in - Length: 0.25 in - Height: 0.25 in (approx.) - Compatibility: Sliding Screen Doors - Number of Rollers per Set: 2 - Package Quantity: 3 sets (6 rollers total) - Hardware Included: Yes - Packaging Type: Carded - Country of Origin: United States - UPC: 049793005700 - Global Trade Identification Number: 00049793005700 - Manufacturer: Prime-Line Products Product Application This spring tension roller is used by homeowners, handymen, and window contractors to restore smooth, secure operation to sliding screen doors that have become loose, noisy, or difficult to glide. Commonly installed in aluminum or vinyl patio screen doors, the spring-loaded design compensates for minor track wear or frame flex, keeping the door aligned and preventing it from jumping off the track. Its compact size makes it especially suitable for modern narrow-profile screen systems, while the corrosion-resistant materials ensure long-term performance in humid or coastal climates. Perfect for seasonal maintenance, rental property upkeep, or DIY home repairs?this 3-pack offers a cost-effective, reliable solution for keeping screen doors functional, quiet, and secure.