Inspection room Tangless Helicoil Inserts do not require a tang to complete the installation process and therefore, do not require breaking of a tang after installation resulting in spent coil sections for disposal. Instead, a Tangless coil Thread insert includes an insert-driving notch to aid in the installation process. Tangless Thread Insert,Tangless Coil Threaded Insert,Thread Inserts Without Tang,Tangled Wire Thread Insert Shenyang Liming Mechanical Component Factory Shenyang Helisert Technology Co., Ltd , https://www.helisert.com