m6m8m10 tool kit insert drive head hex socket screw zinc alloy nut 100pcs

good quality material: these threaded inserts are made of good quality zinc alloy, hard and durable usage: pre-drill a proper hole, screw in with internal hex tool; unique self-tapping designed external thread, contribute to tapping, with good tensile resistance, can effectively prevent stripped due easy to install: simply drill an appropriately sized hole and install with hex key, tapered external threads makes it not easy to pull out caused by vibration wide applic