They provide additional strength and durability to withstand the forces experienced during shooting, especially with high-powered bows. Advantage: Inserts reinforce the arrow shaft where the point is attached. Instruction: Inserts make it easier to replace points on arrows. Snapklik.co : Aransas II Neoprene Surf ≈ Sand Wading Boot PATIKIL 25/100 Grain Archery Arrow Insert 0.244 Inch, 6 Set Brass Arrow Weight Bolt for Field Points Shaft. R 1,119. or 4 x payments... Suitable Diameter 6.2mm Arrow Shaft Weight with bronze 25 50 65 75 85 SpecificationMaterial: BrassWeight: 25 Grain, 100 GrainDiameter: 6.2mm / 0.244 inchLength: 13mm / 0.51 inch, 44mm / 1.73 inchThread Size: M4x5mm / M4x0.2 inch(DxL)Packing List: 6 Set x Archery Arrow InsertsAdvantageInserts reinforce the arrow shaft where the point is attached. Application: Arrow inserts allow for weight customization by adding or removing weight from the front of the arrow. 100 Grain Field Tips PATIKIL 25/100 Grain Archery Arrow Insert 0.244 Inch, 6 Set Brass Arrow Weight Bolt For Field Points Shaft Ethics Archery NOTE: Please confirm the diameter of the arrow inserts before ordering. Feature: Inserts ensure proper alignment of field points with the arrow shaft. This adjustment can help fine-tune the arrow's balance, flight characteristics, and overall performance. Arrow inserts allow for weight customization by adding or removing weight from the front of the arrow. InstructionInserts make it easier to replace points on arrows.