①Long handle
②Iron adaptor avoid thread stripping
③2.5mm thread pitch can not only avoid sundries to destroy the screw socket can also improve the airproof
④Rear cover and piston can be taken apart for cleaning
⑤Antiskid rubber for comfortable operation
⑥Double piston High precision machining
⑦Thumb model handle super durable
⑧Transparent plastic tubecan see the gas situation clearly
⑨Extra mandrel and cylinder for replace
The seal cup match the tube well, easy to load the grease by pulling the rod
