Pyramid caps with attached hollow balls for square tubing—six sizes for tubes ranging from 30 × 30 to 100 × 100 mm. The ball diameters range from Ø 40 to Ø 100 mm; the cap for 30 × 30 mm also features a Ø 40 mm ball. Made of raw, ungalvanized Steel. Note: The hollow sphere must be drilled twice before galvanizing.