The Spot-On® Lock-n-Load Inserts are the industry's only Self Centering Glueless, Reusable and Indexable Arrow Insert on the market! Another industry advancement for Clean Shot Archery, an all new arrow insert to use with any broadhead. This amazingly innovative new arrow insert allows the archer the flexibility to install the Spot-On® Lock-n-Load Insert into their arrow shaft by simply tightening the mechanical self centering locking set screw in place with the Allen wrench included in all packs. If the arrow shaft ever becomes damaged or unusable then simply remove the Spot-On® Lock-n-Load Insert and re-install it on a new arrow. No additional cost, No Glue and Simple to use again and again! The Spot-On® Lock-n-Load Insert can also be easily rotated and locked to aid in the alignment of your vanes to the blades on your broadhead; this is called "Indexing". Use the revolutionary Lock-n-Load Insert on all broadheads to improve arrow flight. Specifically designed for the Spot-On® system of products including Laser Broadheads, Laser Target/Field Points or Hollow-Point Broadheads. Try the best…you'll never go back to the use of messy glue or epoxy to install single use arrow inserts! The Ultimate Evolution in Insert Technology™