Usage Tips:Tubular Rivets M0.9 M1.3 M1.5 M1.7 Mix Circuit Board PCB Nails Copper Hollow Rivet Nuts Kit brand and Features: Simply drill a hole slightly larger than the outside diameter of your via of choice and insert the via. Via can easily be ground down if required to the desired length and center punched on the shaft side of the circuit board to spread that side of the shaft. After this it can be soldered into place or whatever you might for wish to do. Alternately, you may choose to even grind off the for head and you will be left with an extremely discrete shaft only. Tip: If you for wish to grind these down you can either use sandpaper or a rotary tool. Can be used on leather; fabric; vinyl and more Specification: Product Name: hollow rivet Material: metal Color:Gold size:M0.9 M1.3 M1.5 M1.7 Quantiy Note:1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes(without retail package): 1000*hollow rivet