Comprehensive upgrade:
1. The oil pump body is made of upgraded SEA#1045 steel, and the oil passage will not have iron slag (the old model uses cast iron to easily have iron slag), and the oil passage has been newly designed and used more stable.
2. The oil pump pressure rod adopts an integrated pressure rod which is beautiful and easy to use.
3. The steel core of the cylinder is chrome-plated, which is more precise and wear-resistant and has a long service life.
4. The casting is made of ball milled cast iron, which has better hardness and toughness than gray iron. (Old models are generally gray iron)
5. The packaging adopts a black square box with wheels, which is beautiful and portable.