Feature: PGA hand-cranked grinder, used with a full-surface grinding machine, with a simple pressing roller for convenient precision grinding. Double roller design, no need to adjust the center, hold the workpiece between the wheels when holding, you can get concentric circles. The left and right direction of the rotating roller can be adjusted to make the workpiece advance or retreat and then grind. The pressure screw on the pressure arm can adjust the pressure and match the punch of different sizes to make it more stable. The products are well-made and ensure the high precision of the products. Specification:Grinding punch outer diameter: 1.5-25mmClamping length: 20-100mmGrinding punch length: 5-38mmRoller accuracy: less than 2umClamping accuracy: 5umWeight: 6650g / 14.7lbPackage list:1 * Handle1 * Adjustment pole1 * Pressure pole1 * Wrench1 * User manual1 * Plastic boxNote:The actual product color may deviate from the photo due to light.There may be a slight deviation in the measurement of product.