Guru Slim Pencil

It sounds like you're describing a specialized fishing lure or tool, possibly designed for targeting specific fish species or conditions. The long, slim body and thicker bristle suggest it may offer enhanced hydrodynamics or vibration in the water, while the range of sizes (0.3g to 3g) indicates versatility for various fishing scenarios. The dark elastilex paint finish likely provides durability and reduces visibility to fish, making it an effective choice for anglers.