The SP snap has a shorter overall length compared to regular snaps, and is ultra-small, so it reduces the weight and posture of the lure when mounted, and it reduces the amount of carrying the hook. In addition, it is not suitable for size, but also high strength. This product is made in Japan using high quality stainless steel wire material that is made in Japan. ★SP Snap-BK is a black color with "black nickel plated" on SP snap. Sizing is the same. The black color reduces the reflection of the snap.