Capabilities and products
- professional hand tool supply
- round/square hole knockout punch set
- flexible nozzle air blow gun
- interchangeable pry bar screwdriver set
Exhibits
The KNOCKOUT PUNCH SET is designed for round and square holes in sheet metal and is presented for applications such as electrical control boxes and panels, with the stated safety objective of producing a clean hole without burrs that could injure operators or cut cable sheaths. Its cutting capacity is listed as 1.2mm stainless steel and 1.6mm mild steel, and the set is intended for use with a 14.4V or higher-voltage impact driver in a torque range of 120~150Nm. For round-hole use, the process begins with a φ13mm minimum pilot hole, then the impact driver is switched to reverse so the bolt can be extended fully before the required die is fitted, inserted through the pilot hole, and secured with the set nut. The impact driver then turns the bolt to pull the punch toward the die until it passes through the material, after which the bolt and punch are separated and the ring of waste material is removed from the die. For square holes, the instructions add layout with a square ruler, φ13mm minimum positioning holes, repeated punching where required, removal of excess material with pliers or a cutting tool, smoothing of the edges, and fitting of the square panel into the completed opening. The round punch dies are Ø22, 27.5, 30, and 34.3mm in SKD-61, while square dies are 33.5x33.5mm and 45x45mm in SKD-61; the 45x45mm die can punch twice for a 45*91mm hole or four times for a 91*91mm hole. Additional set specifications include a 68x68mm or 92x92mm square ruler made from PC and magnet, an Ø12.3mm bearing driving bolt with 19mm set nut using SCM-415 for the bolt and Aluminum alloy ADC-12 for the body, an extra 19mm set nut, and a 1/4" Hex Shank adaptor measuring 8*L45mm. If idling occurs during punching, operation should stop while the user checks whether the workpiece is within cutting capacity, whether the punch die or cutting surface is worn, whether the die, bolt, and set nut are correctly positioned, and whether the power tool has sufficient power and at least 110Nm torque. The 5pcs Interchangeable Pry Bar Screwdriver Set is intended for tasks including car audio or radio trim, door panels, windows, interior accessories, bicycle-tire removal, and hard stuck metal clips, and can be supplied in an EVA/PP box or pouch bag. That screwdriver set uses 6150 shanks with matte chrome plating and an optional black plating in 1/4” Hex, a PP/TPR dual-color handle, a 50BV30 chrome-plated hex holder, Aluminum 6061 black-anodized quick release, and a 6AK1006 chrome-plated striking cap. Packaging options for the 5pcs Interchangeable Pry Bar Screwdriver Set include a PP box with EVA insert measuring 20.7x17x5.5cm and a pouch bag with a flexible 12pcs bit rack for tool compilation. The named hand-tool range also includes a Flexible Nozzle Air Blow Gun, adding an air-blow product to the knockout-punch and interchangeable pry-bar screwdriver products described across the Samsopro offering.
Company profile
Uson International Co., Ltd., through the Samsopro hand-tool line, states that it has specialized in professional hand tools in Taiwan for over 30 years, with the named range including knockout punch sets and flexible-nozzle air blow guns. Its product development is directed toward professional hand-tool applications, with detailed operating and specification information for knockout punching tools as well as a separate interchangeable pry-bar screwdriver set for automotive trim, bicycle-tire, and stuck-clip work.