Bowls In crown green bowls, players use two bowls each. Bowls are also commonly known as woods. There are no requirement for official markings on the bowls although manufacturers branding and the weight of the bowls is common. Players often have their initials marked on one side, or use stickers to identify their bowls. One side of the bowl has an indent or dimple allowing the player to identify by touch which side of the bowl has the bias. Crown green bowls come in a variety of bias strengths, weights, densities, sizes, materials and colours. The minimum weight is but there is no maximum weight. Bowls are referred to and sold by their weight, and are available from 2 lb 0 oz to 2 lb 14 oz, in 1 oz increments. They were traditionally made from
lignum vitae wood but are now manufactured from a composite plastic. Wooden bowls have a variable density throughout their core due to the nature of wood. Plastic bowls have a consistent and regular density throughout and manufacturers can produce bowls in different densities generally known as standard, low density and high density. This means that a smaller bowl with a higher density can be the same weight as a larger bowl with a lower density. There are two ways of delivering a bowl: with or against the bias. Sending a bowl with the thumb on the biased side is known as thumb peg and sending a bowl with the thumb on the non-biased side is known as finger peg. The different pegs determine in which direction the bowl will go. A player delivering the jack is expected to declare which peg is used, but a player delivering a subsequent wood is not.
Jack The jack, also commonly known as the block, is a smaller version of the bowls used by each player in a game of crown green bowls and also contains a bias. There are written specifications determining the size, weight and bias strength of jacks. To be able to be used in an official British Crown Green Bowls Association recognised league match or competition, jacks must be black, white or yellow. Other colours are available for use in practice. Jacks have different markings on each side. On one side there is a single circle with the manufacturer's name and other official lettering. This side of the jack is the side with the bias. The other side has a single circle surrounded by three solid dots or smaller circles indicating the non-bias side. Official jacks must also be stamped with an approved date stamp every seven years to comply with the rules. Jacks measure 9.5 cm (3 & 3/4 inches) in diameter and weigh about 660 grams (1 lb 7 oz).
Mat The mat is also known as the footer. It is usually black and has a textured top surface to help with grip. It a simple rubber circular mat measuring 14 cm (4.5 inches) in diameter, and around 0.5 cm (1/8th of an inch) in thickness. When delivering a jack or bowl, the player must place their non-leading foot on the mat. == Major events ==