Welcome to my shop Hello, dear friends, welcome to shop in the store If you have any needs, you can send me an email at any time, we will reply to you as soon as possible I hope you have a good shopping in the store and wish you a happy one Feature: These pin centers are machined with external marking points and can be used to precisely align the blanks for the correct placement of pins or mortises. The pin center is made of high-quality metal with a chrome-plated surface, so it has high hardness and is not easy to rust, and has a long service life. Provides 4 different sizes, 6mm, 8mm, 10mm, 12mm, which can meet a variety of purposes. Just drill a set of holes, slide in the center of the pin, and press the joints together. The point on the center of the pin will accurately mark the location of the hole on the other component. There are solid tenon centers and hollow tenon centers available. specification: Material: stainless steel Bottom diameter: 6mm, 8mm, 10mm, 12mm Type: solid, hollow (optional) Quantity: 8 (2 for each size) Weight: about 34~57g Package includes: 8 *pin center note: 1. Due to the difference of light and screen, the color of the item may be slightly different from the picture. 2. Due to manual measurement, please allow 1-3cm difference. 3. Thank you for your understanding.