PERFECT SHOT - Billiard Training Aid -Easy for beginners to use; provides immediate visualization of the aim point; great device for beginners -PERFECT SHOT shows the exact aim point at the object ball to aim the cue ball -Helps visualize the aim point at the object ball -PERFECT SHOT mounts on the object ball in less than 3 seconds; mount Perfect Shot and shoot -It is small, lightweight and made of durable high-quality plastic