Features: *16pcsDowel and Tenon Center Points Pin Wood 6mm/8mm/10mm/13mmCenter Set *Machined with external marking points,used for accurately aligning stock for proper dowel or tenon placement *Dowel centers made of steel so you can use this for hard wood as well as soft wood *Solid dowel centers and hollow ones and you can choose the ones you need *Just drill one set of holes, slip in the dowel centers and press the joint together *The points on the dowel centers precisely mark the hole locations on the other member Specifications: *Material: A3 steel *Surface Finishing: Chrome plating *Type: Solid/Hollow *Size: 6mm, 8mm, 10mm, 13mm(Approx.) Package Contents: Solid Set : 16pcs/Set Dowel Centers Solid 6mm, 8mm, 10mm, 13mm 4pcs for each size Solid Hollow Set: 8PCS solid: 6mm, 8mm, 10mm, 12mm (Approx.), 2pcs for each size 8PCS hollow: 6mm, 8mm, 10mm, 12mm (Approx.), 2pcs for each size Note: The real color 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.