Features Available in four sizes, 6mm, 8mm, 10mm, 13mm, the set contains two pin centers of each size. Machined with external marking points, these pin centers are used to accurately align the material for proper placement of pegs or dowels. Simply drill a set of holes, slide the centers of the pegs and press the gasket to put it together. Points in the centers of the pegs will accurately mark the locations of the holes in the other member. The dowel centers are made of steel, so you can use them for both hardwood and softwood. There are solid dowels and hollow centers and you can choose the ones you need. Specifications: Material: A3 steel Surface Finish: Chrome Type: Solid, Hollow (Optional) Size: 6mm, 8mm, 10mm, 13mm Quantity: 2 pieces each size Features: Pegs centers are made of steel, so you can use them for hardwood and softwood. There are solid dowels and hollow centers and you can choose the ones you need. Available in four sizes, 6mm, 8mm, 10mm, 13mm, the set contains two pin centers of each size. Machined with external marking points, these spike centers are used to accurately align the material for proper placement of spikes or spikes. Just drill a set of holes, slide the centers of the dowels and press the joint. The points in the centers of the pins will accurately mark the locations of the holes in the other member. Package includes: 8 spike centers Package List