CORROSION RESISTANT - Heavy duty garage door spring made of galvanized steel wire - durable and corrosion resistant, providing reliability for years. TO THE MANUFACTURER SPECIFICATIONS OF BRAM - Spring for gates manufactured to manufacturer's specifications, with precise wire diameter and length, corresponding to the original. Provides reliable operation and durability. READY FOR MOUNTING - Spring ends are carefully bent and prepared for fixing to the studs for easy and safe replacement of springs for garage doors. ROTATION MARK - The yellow line spring is our special suggestion - a rotation marker for easy assembly. With it, you will mount the spring without problems and use your garage door safely. LONG LIFE - The garage door spring offers a long service life - its number of cycles is in accordance with the specifications of the original spring, so you can be sure that your door will work reliably for a long time., Manufacturer: KASTOM TOMASZ KAŚKIEWICZ