Features: Designed for adjusting the friction between the formwork and the nylon sleeve, the mold can be closed about 50,000 times after about 1/4 turn. Using this tool can make the mould device easy and simple to take off. The device can also be used on the workpiece of small nozzle plate, middle plate or secondary ejection small nozzle or slide seat. For mold weight below 100KG, use 12D-4 pieces, 16D-4 pieces for 500KG and 20D-4 pieces for 1000KG. Good wear resistance and heat resistance. Specification: Material: Nylon resin & High strength alloy steel Weight: 65~211g/2.3~7.4oz Model: D12 M6 screw thread, D12 M6 screw thread (L), D13 M6 screw thread, D14 M8 screw thread, D16 M8 screw thread (Optional) Package List: 10 x Nylon Lock Shoulder Screw Note: Although the heat-resisting temperature of nylon sleeve is 150℃, it is continuously affected by the locking stress of cone bolt, which leads to the decrease of durability of nylon sleeve, and the normal working temperature is below 80℃.  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.