Review on Sanding Detailer Standard Kit - Coarser Grits, Pack of 24 by Shedrick Roach

I build hobby model ships and love these sharpening rods. They fit well in tight spaces and are designed primarily for any type of wooden model. There is a set of four grinding wheels, each color coded for easy identification and grit selection. The best part is that the strip of sandpaper can be moved as the area at the work end wears out. Just squeeze the wand (it's spring-loaded) and adjust the strip of sandpaper to bring the new section into the work area. Many additional strips have been supplied for each grit. Why didn't they exist when I started this hobby over 50 years ago? Product link: https://www.amazon.com/gp/product/B0039ZB24G/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1