This set of hoses and fittings is essential for any automotive technician. Based on my OBSERVATIONS, the quality of these parts is top-notch and the durability is impressive. The fittings provide a secure connection to the system and prevent annoying leaks. The only downside is that the price may be a bit high for those on a tight budget. However, for those who are looking for a reliable and high-quality set this is definitely worth the investment..