Big-Sert 5212 M12x1.25mm Oversized Metric Thread Repair Kit

BIG-SERT is a heavy wall solid bushing, easy to install with positive placement. BIG-SERT gives increased load protection for critical use. BIG-SERT will repair oversize holes which have previously been repaired. This is a complete kit including: drill bit, counterboring tool, tap, inserting tool, and 5 inserts! BIG-SERT kits are an oversize thread repair system that will repair threads that were repaired by standard Time-Serts,Helicoil, Perma-Coil, any other similar coil style insert.