Details:* * Machined with external marking points, used to accurately align inventory for proper placement of studs or tenons * Anchor centers made of steel so you can use it on hardwood and softwood * Solid stud centers and hollow and you can choose the ones you need * Just drill one set of holes, slide the stud centers in and press the joint together * Points on stud centers accurately mark hole locations on the second piece* Color: Silver (as pictures show)* Material: A3* Surface finishing: chrome plating* Size:8pcs solid: 6mm, 8mm, 10mm, 12mm (approx.), 2pcs for each size8pcs hollow: 6mm, 8mm, 10mm, 12mm (approx.), 2pcs for each sizeUse steps:1. After the wooden tenon is connected to the wooden block, the wood round tenons is covered with a wooden tenon2. Align the top of the head with another block of wood that needs to be cut3. Thus, on the second block of wood there is a sign of a round head4. Use the drill bit to drill the round head, then the two pieces of wood are perfectly connected without dislocation and tenonPackage Contents:16 * Dowel Centers (8*Solid+8*Hollow)Note:The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.