It is specially designed to remove damaged or corroded nuts without damaging bolt threads. Hardened steel blades and handles are carefully manufactured for strength and durability. All separators can be used with sockets or wrenches. It is an perfect choice for family/workshop/hobby studio, etc. You receive a set of wrenches, including two separators of different models, which can meet your needs. Describe: Name: wrench set Material: steel Specification: No.1 separator (12-16mm) No.2 separator (16-22mm) Dimensions: 102mm for No.1 separator and 130mm for No.2 separator. Bolt diameters: 14mm for No.1 separator and 18mm for No.2 separator. Color: As Shown Package Contents: 1 x Wrench set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.