It is made of hard alloy, higher strength, higher resistance, strong and durable, not easy to wear. 1/2 inch bearing diameter, 1/4 inch shank, cutting length: 10mm/20 mm/25mm/38mm, widely used in portable handheld and bench cutters. The backlash-free design of the blade is sharp and smooth, suitable for trimming, three-dimensional relief angle and slotting. Heat-resistant jaws with PTFE coating to to prevent the accumulation of wood chips, resin and asphalt. Good wear resistance, long service life. Top bearing cutter set cuts all composting materials, MDF, solid wood, chipboard, plywood, etc. Applicable models: engraving machine, trimmer. Product Description Material: Carbide Shank diameter: 1/4 Cutting length: 10mm, 20mm, 25mm, 38mm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.