General description These 8 pieces of SC20UU 20mm Aluminum Linear Motion Ball Bearing Slide Bushings are designed for CNC applications, providing smooth and efficient linear motion. Technical specifications Model: SC20UU Shaft diameter: 20mm Material: Aluminum Dimensions: 50mm x 54mm x 41mm (L×W×H) Measurement error: +/- 1-3cm Included 8 x SC20UU 20mm Aluminum Linear Motion Ball Bearing Other information Note: Light and different displays may cause the color of the item in the picture to differ slightly from the actual product.