Useage:  Protect arrow from explosion
 Material: Aluminium;
Surface treatment:　Anodizing
Package include：30pcs
Size available Ring ID:5.5mm/5.7mm/6.0mm/ 7.3mm/7.4mm/7.5mm/7.6mm/7.7mm/7.8mm/8.0mm
Color: blue /silver /red /gold /green /dark green/light blue/Rose red/black