Unior 253/2DP adjustable spanner wrench 2.3,3.8Product features material: premium flex plus carbon steel pins: black finish entirely hardened and tempered surface finish: trivalent chrome plated according to ISO 1456: 2009 double plastic dipped handles The 2. 3 and 3. 8 mm pins are interchangeable, the distance between them is adjustable. The biggest difference between the pins is 50 mm open and 10 mm closed.