MT Valves & Fittings product. Available references and published specifications: • 51290200 — measures: EPDM DOUBLE SPHERE RUBBER EXPANSION JOINT FLANGED ENDS PN10; weight (kg): 19.8; small / large box: 1 / 1 • 51290250 — measures: EPDM DOUBLE SPHERE RUBBER EXPANSION JOINT FLANGED ENDS PN10; weight (kg): 25; small / large box: 1 / 1 • 5129050 — measures: EPDM DOUBLE SPHERE RUBBER EXPANSION JOINT FLANGED ENDS PN10/; weight (kg): 4.62; small / large box: 1 / 1 • 5129065 — measures: EPDM DOUBLE SPHERE RUBBER EXPANSION JOINT FLANGED ENDS PN10/; weight (kg): 5.42; small / large box: 1 / 1 • 5129080 — measures: EPDM DOUBLE SPHERE RUBBER EXPANSION JOINT FLANGED ENDS PN10/; weight (kg): 6.7; small / large box: 1 / 1 • 5129100 — measures: EPDM DOUBLE SPHERE RUBBER EXPANSION JOINT FLANGED ENDS PN10/; weight (kg): 7.8; small / large box: 1 / 1 • 5129125 — measures: EPDM DOUBLE SPHERE RUBBER EXPANSION JOINT FLANGED ENDS PN10/; weight (kg): 10.5; small / large box: 1 / 1 • 5129150 — measures: EPDM DOUBLE SPHERE RUBBER EXPANSION JOINT FLANGED ENDS PN10/; weight (kg): 13.8; small / large box: 1 / 1 Price and local availability on request. Source: https://mtspain.net/en/double-sphere-rubber-expansion-joint-flanged-end-epdm/