12 Color-coded Micro Mesh coated sanding swabs ranging from coarse to fine(see below for grits). Washable and reuseable, these swabs work well for any craft, art, or hobby project where small areas need to be sanded. Perfect for polymer clay projects, plastic, porcelain, sculpting and model finishing. Small and large swab variety packs are also available. Using water as a lubricant is encouraged is encouraged to extend abrasive life and cool the work surface. 5in. tip about 3/4in. in length. 3in. swab tip is about 1/2in. in length. 2-1/2in. swab tip is about 3/8in. in length. 100MX = Sea green, 120 MX = Country blue, 150 MX = Dusty Mauve, 1500 = Bronze, 1800 = Green, 2400 = Black, 3200 = Dark Purple, 3600 = Brown, 4000 = Teal, 6000 = Light, Purple, 8000 = Royal Blue, 12000 = Grey