*Excellent Punching: Punching force: 35T/350KN; Depth of throat: 4.3"/109 mm. The punch dies are made of high carbon tungsten steel and not easy to wear off. The max thickness of iron plate: 1/10" to 2/5" (3-10 mm), the max thickness of copper/aluminum bar: 1/10" to 1/2" (3-12.7 mm), the max thickness of stainless steel: 1/10" to 3/10" (3-8 mm). *4 Pairs of Dies: The hydraulic puncher comes with four pairs of punching dies of 3/8"(ф10.5 mm), 1/2"(ф13.8 mm), 5/8"(ф17.5 mm), 3/4"(ф20.5 mm). Different dies are designed for precise hole punching. It also features accurate positioning without offset. *Durable Steel Structure: This hydraulic hole punching tool features high strength and good toughness with premium alloy steel construction. And the heavy-duty metal hole punch tool needs to connect with a hydraulic pump to get ideal performance(The pump is not included). The plastic cap protects the punching tool from dust. *Compact Size & Portable: our hole puncher with compact size is space-saving. A thickened and rubberized handle, increasing the friction, gives you a comfortable and anti-slip using experience. It is suitable for long-lasting use. *Wide Application: The split hole puncher is widely applied in punching metal plates, including iron, aluminum, copper, stainless steel, etc. It is popular in the electricity industry, construction, etc. ******************************************************************************************************* *Specifications Punching force:350KN(35T) Depth of throat: 4.3"(110 mm) Aperture(4 pairs): 3/8"(ф10.5 mm), 1/2"(ф13.8 mm), 5/8"(ф17.5 mm), 3/4"(ф20.5 mm) Max. Thickness of iron plate: 3-10 mm (1/10 to 2/5 inch) Max. Thickness of copper bar: 3-12 mm (1/10 to 1/2 inch) Max. Thickness of aluminum: 3-12 mm (1/10 to 1/2 inch) Max. Thickness of stainless steel: 3-8 mm (1/10 to 3/10 inch) *Pakcage Content 1 x Puncher 1 x Concave pressing plate 4 x Dies(one of them in the puncher) 1 x Allen wrench