Features: High elastic Head: our working-hammer head can be replaced. The high-performance head is resistant to knocking, oil and skid. Oil resistant rubber working-hammer head: the elasticity of the working-hammer head is moderate, and the surface of the contact will not be broken when knocking. The working-hammer surface is flat: when the working-hammer head strikes, the surface of the stressed thing is not easy to be broken, and the handle is comfortable and labor-saving. Rubber coated handle: ergonomic design, comfortable grip of working-hammer head, easy to hold for a long time. High quality steel working-hammer body: the working-hammer is quenched with high-quality steel, with strong hardness, wear resistance and long service life. Size(cm) 25mm Length: 24.5 KnockingSurface: 2.3 30mm Length: 25.5 KnockingSurface: 2.8 35mmm Length: 26.5 KnockingSurface: 3.3 40mmm Length: 30 KnockingSurface: 3.8 45mm Length: 31 KnockingSurface: 4.3 Size(inch) 25mm Length: 9.65 KnockingSurface: 0.91 30mm Length: 10.04 KnockingSurface: 1.10 35mmm Length: 10.43 KnockingSurface: 1.30 40mmm Length: 11.81 KnockingSurface: 1.50 45mm Length: 12.20 KnockingSurface: 1.69 Specifications: Material: Rubber Function: Working-hammer includes: Package Contents: 1 * Hammer