Made of solid metal material, durable in using.This is a 4-pin socket Spanner tool. Two-sided with 19mm ID (26mm OD) 4-pin Spanner on one side and 23mm ID (30.5mm OD) 4-pin Spanner on the other side.Double ended, each end has 4 pegs.Internal size of the pegs at one end is 23 mm the other end is 19mm. A 1/2 inch drive is required to use it.A special and perfect replace tool for motorcycle.Package include: 1 x motorcycle clutch Spanner