TAC Vanes Driver 3.75in OD Green Vanes - 100 pack - These vanes feature a mid-profile for ideal clearance, optimum stiffness for reduced drag and maintained downrange speed, unmatched silent flight for hunting and excellent memory for consistency. Revolutionary design promotes spin for straighter trajectory. Constructed using proprietary polymer blend material. Demensions: 3.75in x .475in Weighs 7.6 grains Excellent memory for consistency Unmatched silent flight for hunting Designed for target archery; use with indoor target arrows