K&S Metal Sizes and Shapes are ideal for model building, crafting, jewelry making, and much more. Each 1 lb bag contains a great selection of carefully engineered metal pieces in brass, aluminum, copper, and stainless steel. - K&S Metal Sizes and Shapes, 1 lbK&s Tube Assortment, K&S TUBE ASSORTMENT NO 707 - Each 1 lb bag contains a great selection of carefully engineered metal pieces in brass, aluminum, copper, and stainless steel. Shapes include a random mix of rods, strip, sheets, and tubing in a variety of sizes. The bag measures roughly 7" × 5½" × 1½". Tubing, shapes, and metals will vary by package.