Couplings & Connectors Capacity : 20-100 mm OD/ID and 20-100 LongAccuracy : ±0.01 mmMOC : Mild Steel, Alloy Steel, Stainless Steel, Titanium, Aluminum, Brass, Bronze, Gun Metal, Copper, Nylon, Delrin etc. Coupling 1 Coupling 2 Coupling 3