It is made of high quality 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 Material: Carbide Shank diameter: 1/4 Cutting length: 10mm, 20mm, 25mm, 38mm.