Markal Carpenter's Chalk Case Forestry Controlled Burning Equipment Tools & Equipment 5d Nail (Finish) 9 8d Forestry 5d Nail (Finish) 9 8d Nail 12 10d Nail 12 1 2 16d Nail 13 1 2 40d Nail 15 50d Nail 16 1 4 60d Nail 16 3 4 8" Spike 18 The above items cannot be detected at distances farther away than shown in the above chart The innovative formulation uses a plant derived solvent as a proactive measure to reduce organic compounds and petroleum distillates It comes in a durable case that protects the chalk from breaking and ensures easy transportation Markal Carpenter's Chalk is a reliable and essential tool for any woodworking project