20 Pcs 6.4mm x 16mm x 13mm Aluminum Open End Large Flange Blind Rivets Ball Valves each tube insert comes with

each tube insert comes with ribs

Not suitable for sewing machines

Total Size (combination): 95 x 50 x 16mm / 3

Control speed according to material hardness

Size 1: 9x5

20 Pcs 6.4mm x 16mm x 13mm Aluminum Open End Large Flange Blind Rivets Ball Valves each tube insert comes withDurible Material All aluminum rivet body and rivet mandrel with Zinc Plated finished, with lightweight but strong and better corrosion resistance. Great Accrssory Widely used in buildings, cars, ships, aircraft, machines, electrical appliances, furniture and other products. Great for both indoor and outdoor use. Firmly Performence Strong enough to support all of your projects. Superior corrosion resistant suitable for salt water applications.