・ We've published a guide on how to tie the "Double Lark's Head Knot," which boasts three advantages: "No wishbone needed! Easy! Adjustable length!" First, find your preferred length using a "Lark's Head Knot," and once you've decided on the length, we recommend using the "Double Lark's Head Knot." ・ Since it's a 6mm hollow core, you can pass a Dyneema line through it for a bungee cord specification. #anzyproduct's Rubber List ↑ This is a list of the rubber products we sell. ＜Specifications＞ ・ Maximum elongation: 8 times ・ Made of 100% natural rubber, emphasizing stretch ・ Stored in a vacuum, oxygen-removed, light-shielded, and cool, dark place until shipment ・ We offer three types: "Outer diameter 12mm x Inner diameter 6mm," "Outer diameter 11mm x Inner diameter 6mm," and "Outer diameter 10mm x Inner diameter 6mm." ＜Reference＞ Initially, select a slightly longer rubber and shorten it to find your preference. If the rubber is stiff, make the rubber slightly longer with the Lark's Head Knot. It will feel softer if you make it longer. If you want more power, adjust the rubber shorter with the Lark's Head Knot to get the maximum power from the rubber.