Features 1、Made of premium Stainless steel,sturdy and durable in use 2、Machined with external marking points, these dowel centers are used for accurately aligning stock for proper dowel or tenon placement. 3、Dowel centers are made of steel so you can use this for hard wood as well as soft wood. 4、Just drill one set of holes, slip in the dowel centers and press the joint together. The points on the dowel centers will precisely mark the hole locations on the other member. 5、A total of 6pcs Dowel and Tenon Centers in different sizes for your various needs Specification Features: Made of premium Stainless steel,sturdy and durable in use Machined with external marking points, these dowel centers are used for accurately aligning stock for proper dowel or tenon placement. Dowel centers are made of steel so you can use this for hard wood as well as soft wood. Just drill one set of holes, slip in the dowel centers and press the joint together. The points on the dowel centers will precisely mark the hole locations on the other member. A total of 6pcs Dowel and Tenon Centers in different sizes for your various needs Specification: Material: stainless steel Specifications: 4MM, 5MM, 6MM, 8MM, 10MM, 12MM Quantity: 6 PCS Package size: 5.5 * 4.2 * 1.5cm / 2.2 * 1.7 * 0.6in Package list: 1 x Dowel and Tenon Center Package List