Flat Green Bowls - The Bowls

The bowls are made of wood, rubber, or composition, and may be black or brown. Each set must carry a distinguishing mark.

Wooden bowls have a maximum diameter of 13.1cm and carry a maximum weight of 1.59kg. They may not be weighted.
Rubber or composition bowls must be between 114-131mm in diameter and weigh not more than 1.59kg.
Flat Green Bowls - The Bowls

All bowls are biased to move along a curved path. The degree of bias is prescribed and bowls must be officially tested. The biased side is marked.
Composition bowls must bear a legible registered stamp and can continue to be used without re-stamping until such time as the stamp is not clearly legible.
Flat Green Bowls - The Jack.
The jack must be white, weigh a maximum of 270g with a diameter of 6.35cm.