--- product_id: 137793109 title: "WHATOOK 1.0mm 0.039\" diameter Ultra Super Flex Replacement Bowsight Fiber 1m 40\" long Red Green and Orange to choose (Red)" brand: "whatook" price: "77 zł" currency: PLN in_stock: true reviews_count: 1 category: "Hi" url: https://www.desertcart.pl/products/137793109-whatook-1-0mm-0-039-diameter-ultra-super-flex-replacement store_origin: PL region: Poland --- # WHATOOK 1.0mm 0.039" diameter Ultra Super Flex Replacement Bowsight Fiber 1m 40" long Red Green and Orange to choose (Red) **Brand:** whatook **Price:** 77 zł **Availability:** ✅ In Stock ## Quick Answers - **What is this?** WHATOOK 1.0mm 0.039" diameter Ultra Super Flex Replacement Bowsight Fiber 1m 40" long Red Green and Orange to choose (Red) by whatook - **How much does it cost?** 77 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/137793109-whatook-1-0mm-0-039-diameter-ultra-super-flex-replacement) ## Best For - whatook enthusiasts ## Why This Product - Trusted whatook brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Color:Red Fluorescent fiber is the core and cladding doped with fluorescent substances and some rare elements. Fluorescent material absorbs light in a specific wavelength range and emits fluorescence in all directions, in which the fluorescence that satisfies the total reflection condition at the core-cladding interface is transmitted axially along the fiber. Instead of receiving only a certain range of light from the end face into the fiber (the so-called numerical aperture problem), the fluorescent fiber can receive light incident in any direction as compared to a conventional communication fiber. Fluorescence material to accept a certain wavelength (stimulated spectrum) of light, the stimulated emission of light energy. Stimulated peak wavelength and the peak wavelength of radiation is different, this phenomenon is called Stokes shift. For fluorescence fractionation Fluorescent fiber The Stokes shift is about 100 ~ 200 nm, but this value is affected by other dopants. After the excitation disappears, the persistence of the luminescence depends on the lifetime of the excited state. This emission is usually exponentially decayed, said the decay time constant for fluorescence lifetime or fluorescence fading time. (PS) and PMMA doped with fluorescent material as the core layer of the optical fiber, fluororesin as the cortical fluorescent fiber has a normal light transmission function, the biggest feature is absorbed from the side light emitted from the end face, light color There are red, yellow, green, violet, orange, etc., the product diameter 0.5 / 0.75 / 1.0 / 1.5 / 2.0 / 3.0mm and so on. Specification: Using length:10-100cm. working temperature:-40-75 Degrees Celsius diameter : 1.0mm Color : Fluorescent Red other order quantity feel free to let me know ## Features - Bright - Fluorescent colors stand out against your target - Durable - Won't fade or crack over time - Flexible - Easily bends around sights and pins - Customize - Use colors you prefer on your sight - Standard sizes - Fits all bowsights and sight pins - ›See more product details ## Images ![WHATOOK 1.0mm 0.039" diameter Ultra Super Flex Replacement Bowsight Fiber 1m 40" long Red Green and Orange to choose (Red) - Image 1](https://images-na.ssl-images-amazon.com/images/I/51H0oCqcWSL.jpg) ![WHATOOK 1.0mm 0.039" diameter Ultra Super Flex Replacement Bowsight Fiber 1m 40" long Red Green and Orange to choose (Red) - Image 2](https://images-na.ssl-images-amazon.com/images/I/41BD90LIkrL.jpg) ![WHATOOK 1.0mm 0.039" diameter Ultra Super Flex Replacement Bowsight Fiber 1m 40" long Red Green and Orange to choose (Red) - Image 3](https://images-na.ssl-images-amazon.com/images/I/41Es3OkiXHL.jpg) ![WHATOOK 1.0mm 0.039" diameter Ultra Super Flex Replacement Bowsight Fiber 1m 40" long Red Green and Orange to choose (Red) - Image 4](https://images-na.ssl-images-amazon.com/images/I/41ayXX8ttzL.jpg) ![WHATOOK 1.0mm 0.039" diameter Ultra Super Flex Replacement Bowsight Fiber 1m 40" long Red Green and Orange to choose (Red) - Image 5](https://images-na.ssl-images-amazon.com/images/I/41Ui6HdePZL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Five Stars *by A***R on September 6, 2017* Fits well in Shibuya Bow Sight. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/137793109-whatook-1-0mm-0-039-diameter-ultra-super-flex-replacement](https://www.desertcart.pl/products/137793109-whatook-1-0mm-0-039-diameter-ultra-super-flex-replacement) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-25*