VEVOR Hydraulic Knockout Punch Driver Kit Hole Tool 4 Die 1/2', 3/4', 1', 1-1/4'4 Dies & Punches SetSelect Suitable SizeSlug Splitting DesignHow to Punch a HoleGuaranteed Quality WorkmanshipWide ApplicationNumber of Dies: 4,Model: SYK-8T-15T,Material: 40Cr Steel,Conduct Size: 1/2', 3/4', 1', 1-1/4',Thread Stud Specification: M20X1.5 & M10X1,Item Weight: 2.1 lbs/ 0.95 kg