Feature:1.High-strength aluminum alloy material, stainless steel screw, removable handle.2.CNC knurling design, flat thrust, wide use range, strong versatility.3.Thread pitch is tight and fine, high strength, suitable fit for most head tube length.4.Pressure block design, the reverse side is used fit for assembling the press-in bottom bracket, and the sinking table is designed to avoid the pressure on the bearing during installation.5.Time-saving and labor-saving, the bearings use lubricated balls, labor-saving operation, not easy to squeeze.Specifications:Material:Aluminum alloy +304 stainless steelSize:As Pictures ShowInstallation Notes:Hold the installation with slow pressure in both hands, pay attention to observe whether the bowl group is inclined, with an adjustable wrench, the circulation is gradually, it is recommended to install only one side each time.Package Contents:1 Set Bowl set pressing tool