Have used only a few times but it works well. Regardless of the brand, the cylinder can be tricky to get in the right spot and get a good seal. This one is the best of the others I have tried. The cylinder is well made and it is easy to change the attachments, but one of them has to be installed for it to work as there is no way to seal the opening at the top to use without. The pump works well and is easy to use with the gauge. While the cylinder feels like it is very durable, the pump is all plastic and likely that parts would break if dropped or not handled with care. The connection for the pump on the cylinder is a standard one, so if you have other pumps it would likely fit this one and also make it easy to replace. There is a metal brake bleeder automotive pump available on Amazon for $17 that makes a great replacement for these plastic vacuum pumps.This product is an excellent value with other similar products at twice or more the price. Recommended product.