🔧 FIXED HOLD: The opposite spiral knurled nuts ensure a balanced high tightening and loosening torque as well as a high pull-out force. The guidance has made insertion much easier for the user. 🔧 3D PRINTING PARTS: The ruthex thread inserts have been developed for subsequent insertion in 3D printer parts from, for example, Anycubic, Creality or Prusa Drucker. The press-in nuts can easily be embedded in a blind or through hole using ultrasound or heat (soldering iron). 🔧 STABLE AND DURABLE: The inserts are made of the highest quality brass, which ensures excellent corrosion resistance and thermal conductivity to ensure long-term use and easy insertion. 🔧 APPLICATION PLASTICS: The threaded nuts are designed for thermoplastic materials. The plastics PLA, PETG, ABS, PPS, PP, etc. are most suitable. 🔧 INCLUDES QUANTITY: ruthex thread insert set RX-M3x5.7 consists of 100 press nuts with an internal thread M3 and a length of 5.7mm for ultrasonic / warm embedding