* Instruction of extender moving.
* We have changed the traditional moving instruction of mounting, the new way for instruction will avoid archers be hurt by sharp iron pins.
* New design for the mounting and sight pin will let the two parts be connected more closely and tightly, it will help aiming more accuracy.
* The new technology helps the outlook of the sight more beautiful.
* Special made sight pin promote, the product in high quality level. To made the sight pin. We use all 6061 Aluminum alloyed material and anodized it black, to keep the hole in the centre of the circle. We just use the most accuracy thread cutting technology to finish it. The precision can reach to 0.02mm, so we can say that maybe the most accuracy sight pin in the world.