1/2 multi-function step joint wrench, body is 40CR precision casting, integral heat treatment, surface pearl .The product is specially designed and suitable for multi-size applications with multi-hole positionThe product has the pulling effect on hexagonal stepped holes and inner holes in multi-size occasions, and the function of adapter (1/2 inch tail square interface) 9.6 11.6 12.6 16.4 21mm (3/8inch 29/68inch 1/2inch 21/32inch 27/32inch)The Radiator Wrench is made of metal for durability. This radiator wrench is designed for making radiator valve repairs.color:Silver grayMaterial:MetalPackage Contents:1 x Wrench NippleOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.