Designed for belt drive garage door openers, it fits 8ft or 10ft high garage doors Adopting advanced technology for automated cutting production, with fine workmanship and precise dimensions Our drive belts are crafted from premium polyurethane (PU) with embedded quality steel wire strands Both ends feature new structural steel clamp for extended service life Good tensile strength, not easy to break, stable operate during use, and long service life Drive belt is engineered to high standard, delivering stable power transmission while significantly reducing garage door operate noise