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Specifications: Material: HSS 4241 Length: 4-12mm length: about 105mm 4-20mm length: about 72mm 4-32mm length: about 72mm The dimensions of the three tools are as follows: 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm) 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 14mm, 16mm, 18mm, 20mm) 4-12mm (4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm) Note: When choosing 4241, pay attention to water injection to cool the steel plate. The drill bit is easy to anneal when using high temperature flue gas. If the user insists on this operation, the drill bit will soon be scrapped. Packing List: 1 x HSS step drill 4-12mm 1 x HSS step drill 4-20mm 1 x HSS step drill 4-32mm 1 x Gold center punch
【HHS Steel】The hexagonal step drill is made of high-quality HSS steel. It is very suitable for cutting holes in various materials such as steel, brass, wood, and plastic.
【Stepped Structure】The drill bit adopts a unique stepped structure, which is more practical. The step drill can use one drill bit to cut holes of multiple sizes without frequent drill bit replacement, which improves work efficiency
【The Side Handle】The side handle is designed to prevent sliding in the chuck. The double-edged design provides faster, smoother and cleaner cutting, and each step is clearly marked with the depth diameter of the step
【Reduce Slippage】The step drill 118degree reduce slippage. Water cooling during work can effectively extend the service life of the drill bit
【Functions】Step drills can achieve functions such as deburring, chamfering, and reaming
