1 piece,Size：d：~1cm h：~2cm

1 piece,Size：d：~1cm h：~2cm

1 piece,Size:d：~1cm；h：~2.5 cm

1 piece,Size: d：~1cm；h：~2cm

1 piece,Density:~18 mg·cm-3
50mg,Density:~18 mg·cm-3
20mg,Density:~18 mg·cm-3

1 Piece,Density:~17 mg·cm-3