highest premium grade 3,000 to 3,200 pieces per kg

average length per piece: 38mm

high grade

3,500 to 3,700 pieces per kg

average length per piece: 36mm

4,000 to 4,200 pieces per kg

average length per piece: 34mm

4,500 to 4,700 pieces per kg

average length per piece: 32mm

5,000 to 6,000 pieces per kg

average length per piece: 30mm

7,000 to 7,500 pieces per kg

average length per piece: 28mm

8,000 pieces and above per kg

average length per piece: below 27mm