Perfect Prei money

Due to another review on this product I have the engines a number "greater" than necessary purchases (75kg instead of 45kg pulling force) would perhaps not have been necessary, but due to the small differences in price (2) was not an issue.
My father (an electrician by trade) has then installed the engines and was very pleased with the processing and handling. The engines are very quiet and can be easily adjusted.
With a long-term evaluation I can not serve, but so far everything is working smoothly.
And the price is simply unbeatable.