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: 1.5-25mm Clamping length: 20-100mm Grinding punch length: 5-38mm Roller accuracy: less than 2um Clamping accuracy: 5um Weight: 6650g / 14.7lb Package list: 1 * Handle 1 * Adjustment pole 1 * Pressure pole 1 * Wrench 1 * User manual 1 * Plastic box Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product.