Nail ( color tip ) / Product design

With color-tip, wood working and DIY process can be more efficient. This product is basically a combination of a color pencil and a nail. While people need to hammer nails, a marking supply is supposed to be with them. They either use a pencil to mark slightly or scratch the wood to leave a mark. It is very inconvenient to hold a pencil every single time of hammering or to look for a pencil and a nail back and forth. Different colors on tip of each nail can be considered as different nail type indicators so those users do not need to try to distinguish sizes among a bunch of various nails.