Features: Engineered for tape control, this 5" Nab hub ensures smooth operations in 1/4" reels to reels tape recorders with its precisions ABS plastic construction. ABS material and screw mounted enable secure attachment while maintaining compatibility with vintages and modern reels to reels sound equipment. for sound, vintages electronics enthusiasts, and professional tape recorders component replacements. Perfect for studio recording, archival sound restoration, or maintaining reels to reels systems in home entertainment setups. Simplifys equipment maintenance with this easy to installs replacement hub that revitalizes aging tape recorders mechanisms without requiring specializeds tool. Specifications: Materials: Plastic Size:as picture show Color: Black, White, gray, Blue, Red(optional) Package Includes: 1PC Nab Hub Center Hub note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.