Danfoss Waltech Welding Nipples for Tube 25 x 4 - SN25X4 Hydraulic DIN 2353 Compression Fitting, O-Ring Seal, Welding Nipple, to Suit Tube Size 25 x 4mm, Chromium Plated Steel, Maximum Working Pressure 315 bar, Danfoss Waltech GBP 18.39 1