1. Material: Copper/Alloy2. Delayed flush valve, automatic return3. Multi-layer electroplating on the surface, not easy to burst and corrosion4. Lengthened and thickened thread makes it more durable5. Dimensions: small 25 mm 91x25 mm, small 1 inch 94x32 mm, medium 25 mm 107x25 mm , medium 1 inch 110x32 mm, large 25 mm 110x25 mm, large 1 inch 113x32 mm6. Weight: 1 inch alloy body 256 g, 1 inch copper body 284 g, 25 mm alloy small 246 g, 25 mm copper small 279 g, 1 inch alloy medium 286 g, 1 inch copper medium 383 g, 25 mm alloy medium 277g, 25 mm copper 358 g, 1 inch alloy large 491 g, 1 inch copper large 454 g, 25 mm alloy large 483 g, 25 mm copper large 428 g

http://olla.gr/stool-flush-valve-urinal-delay-valve-hand-press-flush-valve-style-25-mm-copper-medium/