3 inches wide cylindrical shape cardboard paper core tubes with metal caps in brown colour that is very essential for art and craft supply customers to protect their drawing papers valuable paintings canvas roll paint brushes and craft supplies. Our cardboard tube mailers are complementary to art and craft supplies. Our art supply protecting tubes are frequently bought together with A4, A3, A2 & A1 drawing books, brush pens, water colour paint, acrylic colours, cotton canvas board, painting knives, flat brush, sponge brush, A4, A3, A2 & A1 sketch book, A4, A3, A2 & A1 drawing notebook, A4, A3, A2 & A1 Canvas board, A4, A3, A2 & A1 paper sheets, tracing papers, paint brushes, cold pressed sheets, adhesive tapes for art, colour pencils, colouring kit, painting kit, sketch pen set by professional painters, artists, school teachers, kids and students for protecting, storing and shipping paintings and art supplies. This product is also being frequently bought office as well as travel supplies to organise the travel bags and separate small and important items. This product is being used by our customers as desk organiser, table organiser and drawer organiser and is used to store pens, pencils, earrings and small stuff that you tent to use, it is preferred by our customers over plastic containers as our product is bio-degradable and environment friendly. This product is manufactured and sourced from our world class manufacturing facility, and we use best quality 80-90 GSM brown craft paper and adhesives to manufacture these tubes with very less human involvement in our Hi-tech manufacturing facility starting from the cutting and slitting of brown craft paper until the cutting of this tubes to provide our customers with the best finish and the consistent quality product.