The main uses and characteristic - Used as a welding holder in the line of hardware processing and construction industry. - With the clear scale, easily settle angles from 20-200 degree by holding the workpieces from outside. - Adjusting the angles by a hex wrench we equipped inside the package. Both inside and outside are magnetic. - Tolerance: 2 degree Specifications Brand Name: LISHUAI Origin: CN(Origin) Type: Permanent Application: Industrial Magnet With Holes: Yes Composite: NdFeB Magnet Shape: Block Model Number: WM10-M