- Free from knots
- Lengths muliples of 1.30 m
- Diameter : 40 cm/+
- Free trim 20 cm
- Max 2 crowns (of knots) allowed
- Lenghts mulitiples of 1.30M
- Diameter : 30,-cm/+
- Free trim 20 cm
- More than 2 crowns allowed
- Length : multiples of 1.30M
- Diameter 30 cm/+
- Free tim 20 cm
- Diameter 20 cm/+
- Free trim 20 cm