Package content: Contains 50 M8 x 25 mm threads, outer diameter of the nut: 14 mm, length: 25 mm. Includes a 6 mm Allen key. High quality: Manufactured in high quality carbon steel, galvanized surface, high hardness, good corrosion resistance, long useful and durable life. Thread design: M8 wood inserts have A unique inner and outer thread design to guarantee a reliable block, is not easy to get due to vibrations, does not deform or slide easily and is more stable when connecting.