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The Engineer SS-02 removes solder more effectively than the large blue plastic body pumps with the yellow spring release knob. The reason for this, in my opinion, is the amount of vacuum pressure this small tool is able to create. The body of the pump to the O-ring is 3 and 3/8 inch long and feels solid in hand because it is made of metal. My only complaint is Amazon dropped the price 8% after I purchased the same pump.