The principle of disassembly and assembly of strut and spherical hub bearing seat is to open and expand the clearance of hub bearing seat.The principle of disassembly/installation of spring strut and spherical hub bearing seat is to expand the clearance of hub bearing seat.Output: parallel pressure surfaceExpansion range: 5.0-11.5 mm.You will receive a hydraulic , which can meet the needs of daily use.describe: Name: hydraulic Scope of application: 5.0-11.5mmApplication: automobile swing arm suspension separatorMaterial: steelcolour: silverPackage Contents: 1 x Hydraulic Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.