SK is a clear base color that was adopted mainly by the top water plug of Megabus.The appearance of Pop Max released in 2002 was the first release, and after that, it also joined the color lineup such as Pop X, Giant Dog X, and Prop Darter 80. It is not a real color with the image of a real bait fish, but it is an extremely simple natural color with a clear body, a silver bone pattern, and a pale orange spot on the back and throat. By the way, SK is an abbreviation for "Spook Killer", and it is named because of the high catch that even the tough clear lake's slit big bass deceives.In the past, it has been adopted for items other than top water plugs such as SR-X cyclone and flap slap in short-term spot production, but this is the first time it has been adopted for a wide range of items.