【Quality Materials】: These M6 threaded inserts are made of stainless steel.
BDZMC 30PCS M6 x 1.0mm Thread Repair Insert Kit, x 1.0, Silver&Red&Black
30PCS M6 x 1.0mm Thread Repair Insert Kit, Metric Helicoil Kit Compatible Hand T
30PCS M6 x 1.0mm Thread Repair Insert Kit, Metric Helicoil Kit Compatible Hand