Designed for service and repair businesses, job invoice forms offer three parts with black image carbonless. Third part is made of index stock for a lasting record. Original is on white stock printed with blue graphics; duplicate is canary; and triplicate is manila. Each form offers detailed charting to describe the service recipient, job information including a description, materials, quantities, costs, miscellaneous changes, labor, hours worked, rate of labor and cost totals, including a space for tax.