Built from durable ABS, this compact bubble level clips to your bowstring or arrow to give a simple, reliable visual reference for correct nock position and consistent bow tuning. Key benefits Durable construction: ABS material resists normal outdoor wear so the level stays reliable during range sessions and field use. Simple attachment: Installs quickly on a bowstring or slides onto an arrow for immediate alignment checks without tools. Consistent tuning: Provides an accurate bubble reference to help you repeat the same nock position every shot, reducing guesswork while tuning your setup. Versatile function: Works for sighting, tuning, and confirming arrow alignment before shooting. What it solves Eliminates inconsistent nock placement that causes erratic arrow flight. Cuts down time spent trialanderror tuning at the range. Offers a portable alignment aid you can use on any session, practice or competition. Key attributes Material: ABS plastic for impact resistance and outdoor durability. Compatibility: Designed to attach to standard bowstrings and to be used on arrows for alignment checks. Performance: Provides a clear bubble reference to maintain consistent nock positioning and improved tuning repeatability. Practical applications Range tuning: Use while adjusting rest height, tiller, and nocking point to confirm each change yields the expected arrow flight. Prehunt check: Clip on before entering the field to make a quick, reliable alignment check under real conditions. Competition setup: Verify consistent nock position for every arrow during warmup to reduce setup variability. Quick use tips Attach to the string or arrow, level the bubble, and set or confirm your nock position. Recheck after any equipment change or bow transport to maintain consistent performance.