3 High-speed Steel Straight Groove Step Drill Bits

$39.95
FREE Shipping

3 High-speed Steel Straight Groove Step Drill Bits

RRP: $79.00
Price: $39.95
You save: $39.05 (49%)
$39.95 FREE Shipping

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Description

Feature: 100% Brand New And High Quality made Of High-quality Hss Steel ideal For Cutting Holes In Various Materials including Steel, Brass, Wood, Plastic, Etc. titanium Coating Reduces Mites And Heat heat Treated And Highly Polished. Drilled Round holes In Steel, Brass, Plastic, Wood, Etc. 3-face Shank Design To Prevent Sliding in The Chuck two Flutes Design Makes Cutting Faster, Smoother And Cleaner each Step Is Clearly Marked With The Step Depth Diameter function: Deburring, Chamfering, Cutting Or Reaming supporting Tools: Pistol Drill, Hand Drill, Rechargeable Drill, Bench drill. (injecting Water To Cool During Work Can Be Effective extend The Service Life Of The Drill Bit, Especially In The Case Of Continuous Drilling) rotating Speed: 3-12 Speed: 260-400 4-12 Speed: 260-400 4-20 Speed: 180-240 note: Due To The Outer Diameter Of Each Step the Step Drill Gradually Expands, And The Corresponding Cutting Resistance And Linear speed Will Gradually Increase. since The Step Drill Is Completely Dependent On Tilt only 1mm Length Of The Edge, If The Feed Speed Is Too Fast it Is Easy To Wear When Drilling And Cause Annealing the Hypotenuse. please Give Downward Force When Drilling, Do Not Press Down too Hard To Avoid Edge Fraying. applicable Materials: Workpieces With General Hardness, Such As wooden Board, Plastic Board, Pvc Board, Iron Board, Board Thickness Within 3mm. please Note That Stainless Steel And Spring Steel Are Not Applicable. Not For Quenching. (water Injection Cooling During Work Can Effectively Extend The Service Life Of The Drill Bit, especially In in The Case Of Continuous Drilling) length: 3-12 Mm Length: Approx. 7.9 Cm/3.11" 4-12 Mm Length: Approx. 6.7 Cm/2.64" 4-20 Mm Length: Approx. 7.4 Cm/2.91" the Knife Has The Following Dimensions: 3-12mm (3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm) 10 Steps 4-12mm: (4mm, 6mm, 8mm, 10mm, 12mm) 5 Steps 4-20mm: (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm) 9 Steps package Included: 1 X Drill Bit 3-12 Mm 1 X Drill Bit 4-12 Mm 1 X Drill Bit 4-20 Mm 1x Bag (optional And Blue Or Black Random Delivery)

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