TAC Vanes TAC Vanes Matrix Vanes 1.75 in 36 Pk Tan. Matrix 1.75? vanes feature a low-profile design for optimum clearance and a modified shield cut that reduces drag and crosswind interference. These vanes are designed for use with 3D and field archery arrows. Features of TAC Vanes Matrix Vanes: 1.75" x .440" low-profile design offers optimum clearance Modified shield cut reduces drag and crosswind interference Optimum stiffness maintains downrange speed Excellent memory for consistent performance Designed for target archery Use with 3D and field archery arrows Package Contents: TAC Vanes Matrix Vanes TAC Vanes 80TAC-0360612-1247: TAC Vanes Matrix Vanes 1.75 in 36 Pk Tan