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Chicago-Latrobe 43639 21-piece HSS drill bit set in metal case

Chicago-Latrobe

Chicago-Latrobe 43639 21pc HSS 135° Drill Bit Set

SKU CH-JCX2-7E54T

A 21-piece high-speed steel drill bit set with 135-degree points and TiCN finish

  • TypeDrill Bits
  • MaterialHAWA
  • 21-piece set covers a wide range of drilling tasks
  • 135° split point reduces walking and starts holes cleanly
  • High-speed steel construction resists wear in metal and wood
  • TiCN coating lowers friction and extends bit life

Chicago-Latrobe 43639 21pc HSS 135° Drill Bit Set

The Chicago-Latrobe 43639 set contains 21 high speed steel drill bits with a 135 degree point angle and TiCN finish. Jobber length bits suit general purpose drilling in metal, wood and plastic. The set is supplied new and ready for workshop or site use.

Who this suits and who should look elsewhere

Suits mechanics, fabricators and DIY users who need a broad range of fractional sizes in one case. Not suited to buyers who require cobalt alloy bits for hardened steel or specialised bits for masonry, glass or large diameter holes.

Highlights

  • 21-piece set covers a wide range of drilling tasks
  • 135° split point reduces walking and starts holes cleanly
  • High-speed steel construction resists wear in metal and wood
  • TiCN coating lowers friction and extends bit life

Specifications

BrandCHICAGO-LATROBE
TypeDrill Bits
MaterialHAWA

Questions about this item

How do I install the 21-piece HSS 135° drill bit set into my drill chuck, and what step do people often get wrong?

Open the chuck fully, insert each bit shank straight and centred, then tighten securely. The common mistake is not seating the bit deep enough, which causes wobble and premature wear on the 135° point.

What maintenance or replacement will the 21-piece HSS 135° drill bit set need later?

The TiCN finish on the high-speed steel bits reduces friction, but the 135° points will dull with use. Resharpen or replace individual bits when cutting performance drops or the finish shows wear.

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