Size (inner diameter x installed pitch x installed length) and quantity: M6 x 1 x 1 D, 20 pieces; M6x1x1.5D, 20pcs; M6x1x2D, 20pcs; M6x1x2.5D, 20pcs; M6x1x3D, 20pcs Function: Steel thread inserts used in low strength materials such as aluminum, magnesium, can avoid thread damage and achieve good connection performance, for improve connection strength and improve connection condition Wide application: ideal for equipment repair and overhaul. Reliable in manufacturing fields such as aviation, automobiles, steam turbines, electronic communications, computers, lamps, molds, mechanical equipment Certain elasticity: threaded inserts are set due to a certain elasticity, the thread insert can even distribute the load on each thread, eliminate the pitch and tooth deviation between the screw and the screw hole and absorb vibration, thereby increasing the strength of thread connection and fatigue resistance Easy to maintain: install a threaded insert into a damaged screw hole, then the screw hole can be used normally, to avoid workpiece loss .