The surface of the insert portion of the bolt is embossed with the pattern to prevent off-target and sliding targets at the site. The pattern on the surface of the bolt can enhance the friction and adhesion of the carbon rod surface. Easy to install: the insert sticks to the end of the shaft and provides a threaded hole in which to screw in the tip of the arrow. Standard size: a standard 8-32 insert allows you to screw in and use various tips (wide head, judo point, blunt head, field point, fishing tips, etc.) on the same arrow. The weight of each copper bolt is accurate within ± 0.5 grains, It can help you improve FOC quickly and the weight can be selected from 50 / 100 / 150 / 200 grains. Service guarantee: if the product does not meet your requirements, we provide a 100% refund guarantee. If you have any questions about this product, please send us information. Thank you

Better adjust balance of arrow, improve accuracy of your arrow Suitable for those who want to try various heads with different weights and need to adjust arrow FOC accordingly. Precise concentricity and high precision , manufactured precisely ,that the difference of weight of the bolt is within ±0.5 grain to maintain the stability of the flying rod. It is suitable for 0.244 inch Archery Arrow shaft with various inner Arrow Diameter ,Good way to add some weight to the front of your arrows. Material: high quality brass production and processing. The weight of the product is 50 / 100 / 150 / 200 grains.

Date First Available: August 28, 2020. Best Sellers Rank: #233,577 in Sports & Outdoors. Customer Reviews: 4.7 out of 5 stars 44 ratings 4.7 out of 5 stars. : B08GX5WY16. Size: ?100 Grains. Manufacturer: ?Rui Hui Archery. Color: ?Brass Bolt-S. Package Weight: ?0.1 Kilograms. Item Package Dimensions L x W x H: ?4.8 x 4.09 x 0.98 inches.