This is a set of 10 each of ishidai (striped beakfish) fishing sinkers and screw swivels. The sinkers are equivalent to a size L from a manufacturer. The screw swivels are approximately size 1. The hole diameter is adjusted to allow for both wire rigs and direct connection to the main line. Rigs using beads and tubes are also possible. These are handmade, so the dimensions and construction may vary slightly from piece to piece. Please consider this before purchasing.