Product Description

HSS M35 COBALT-This step drill bit is made of HSS M35 cobalt with HSS titanium coating to improve hardness and heat-resistance lengthening the service life.

DRILL FLAT WITHOUT BURRS-The spiral grooved drill cut more smoothly than straight grooved ones and other ordinary drill bits. The addition of cobalt increases the sharpness and wear-resistance and helps you drill holes flatly and smoothly without burrs in stainless steel cable railing posts and handrails. 

9 STEP SIZES- These step drill bit include 9 steps: 5/32"(4mm), 13/64"(5mm), 15/64"(6mm), 9/32"(7mm), 5/16"(8mm), 23/64"(9mm), 25/64"(10mm), 7/16"(11mm), 15/32"(12mm). Capable to drill holes of 9 sizes at one time to save your time, efforts and money .

UNIVERSAL COMPATIBILITY-The tri-flatted shank fits with various drilling tools with 1/4 inch chuck size. It also helps to better clamp on the pistol drill to prevent slippage and shedding during the rotation.

MULTIPURPOSE-The special design of drill bit prevents metal scurf from flying around for improved safety. 

Free shipping

• Shipping is free for orders within the Continental US now.
• Most of the orders will be shipped by Amazon. Since we sell on Amazon too.
• What you got from this official website will be the same as we sell on amazon but with better discount.

Fast delivery

• Once your order is placed, you will receive a confirmation email and we will immediately begin processing. We will update the tracking number to you as soon as amazon updating it, which often takes amazon 1-3 days. Sometimes your order might be split into several packages and gradually arrive.
• Normally, Your order starts shipping within 1-2 days.Delivery usually takes 2-4 days from the shipment date. That means you will receive your order 3-6 days later after placing it.
• There's a small chance that some goods in your order would be confirmed to be out of stock due to asynchronized stock information. In that situation, we will contact you by email or phone.
• Sometimes you might experience delivery delays due to carrier issues or unforeseen circumstances such as peak season, national holidays, strikes, or other events.

Free Return

• You can return the order within 30 days if you don't like it. All you have to afford is the freight for sending back.
• Please send the request on the page we provided and wait for confirmation email before sending back. Do not send it back without confirmation.  
• Please send all the items back. Any items that have been resized, damaged or otherwise altered after delivery will not be accepted for return.
• We will refund to you after check the received goods

Free Exchange

• We wiil replace goods if they are defective or damaged for our mistake.
• Click here to start a return I want to return
• Read more about Refund Policy