Check the listing for details. M2-M20 Slotted Self Tapping Threaded Inserts External and Internal Thread. Condition: New. Listed at 1.99 USD. Product Description Name: Slotted Self Tapping Threaded Inserts External and Internal Thread Material: 303 stainless steel/carbon steel galvanized(optional) Color: Gold/Silver Size:Inner diameter x Outer diameter x Length e.g: M2xM4.5x6mm, inner diameter=2mm, outer diameter=4.5mm, length=6mm. The data is for reference only, please prevail in kind! Quantity: According to your choic Packaging: plastic bag / carton If you need to purchase in large quantities, please contact us and we will calculate the details and provide you with a discounted price! illustrate They are a new type of fastener that increases the strength of the thread. Self-tapping inserts are embedded in softer materials such as plastics, aluminum alloys, cast iron and coppers to create stronger internal threads. Used in the automotive industry, rail car industry, shipbuilding industry, home appliances, construction machinery, office machinery, electronic products, engineering, plastics, high-end furniture and other industries. Application 1.Carbon steel: suitable for use on substrates with low engineering strength such as aluminum alloys, copper alloys, plastics, etc. 2.Stainless steel 303: suitable for use on high-strength materials such as cast iron. Customer service online time： 1.Our working hours are from 8:30 am to 17:30 pm Beijing time Monday to Saturday，(excluding Chinese holidays and special circumstances). 2.If the customer service does not reply to the message in time, please be patient, we will reply you immediately when we see the message. Returns: 1.If you are returning the goods because you have changed your mind, we do not reimburse you for your return shipping costs. However, if there are any defects in the product or errors in the order, please contact me first and I will provide you with a solution. 2.We hope that you have an excellent experience in dealing with us, however, should you encounter any problems with your order, please do contact us prior to leaving feedback. Customer satisfaction is of the utmost importance to us, so we aim to resolve any issues you might have efficiently and effectively.