1. Hydraulic system with strong ability makes the outsole and upper fit securely. 2. Adjustable tilting angle of shoe head for the perfect outcome. 3. The design of automatic rebalance ensures the outsole get equally distributed pressure with no occurrence of interstices. 4. Suitable for ladies shoes with any height of heels and men shoes with any sizes. 5. Two-time automatic adjustment of pressing strength makes the outsole attached substantially.