The Arlesey Bomb is an angling weight developed by Richard Walker at the lake in Arlesey.
The Arlesey Bomb was developed to allow him to cast the long distances required.
[1] It is tear-shaped, with a loop at the top to attach the line.
Its shape makes it aerodynamic to cast, but unlikely to snag on the river or lake bottom.
The incorporation of a swivel also prevented the line getting twisted.