Water Garden & Irrigation Supplies
Gebo 1 Inch (33-34mm) Pipe Repair Clamp X 3/4 Inch Side Thread Joint Leak Fix
Components of clamps are made as follows: - top and bottom part of clamp ; black malleable cast iron; - sealing sleeve ; EPDM rubber; - connecting screws ; carbon steel.
https://www.bizrate.co.uk/watergarden_irrigationsupplies/gebo-1-inch-33-34mm-pipe-oid27050778925.html