Length:6mm,7mm,8mm,9mm,10mm,11mm,12mm,13mm,14mm,15mm,16mm,17mm, and so on
 Thickness:0.1mm,0.15mm,0.2mm,0.25mm,0.3mm
 Style: A Curl,B Curl, C Curl, D Curl, J Curl
 Color: black and colorful ones like pink, red, green, blue, yellow, rainbow and so on
 Package: 0.5g, 1 g per pp bag or 200g per bag or 500 g per bag, or packed in cans, trays for your reference