5/8 in Indexable Carbide Lathe Turning Tool Holder Set - Complete 36pc

In this review the tester examined the 5/8 in indexable carbide lathe turning tool set to see whether it provides a practical, ready-to-use kit for hobbyists and light industrial shops. The bottom line: this set is best for machinists who want a balanced combination of three right-hand tool holders and a large supply of indexable inserts for general turning tasks, because the kit pairs sturdy 40Cr steel holders with TIN-coated carbide blades that are easy to swap and store.

Key Features

• Complete kit: The package includes three 5/8 in tool holders and 33 inserts, giving a generous supply for multiple jobs without immediate reordering.
• Durable holders: Holders are made from 40Cr steel so they stand up to everyday lathe use and maintain alignment over time.
• Carbide inserts with TIN coating: The CNMG, WNMG and TNMG inserts have a TIN finish that provides increased hardness and wear resistance for mixed steel and aluminum work.
• Standard size: Each holder measures 5/8 x 5/8 in (16 x 16 mm) and 100 mm long, fitting common lathe toolposts without modification.
• Organized storage: Inserts come packed in three clear plastic boxes and each holder is boxed, making inventory and identification straightforward.

Who It's For

This set is aimed at workshop owners, small production shops and serious hobby machinists who need a ready supply of right-hand turning tools and multiple insert geometries (CNMG, WNMG, TNMG) for general turning and facing operations. It is especially useful when jobs require quick insert changes and consistent toolholder fitment.

Users who need left-hand holders, very high-precision specialty holders, or larger industrial volumes should look elsewhere, since the kit contains only right-hand holders and targets common lathe setups rather than specialized or production-only tooling systems.

Pros & Cons

Pros

• Good initial quantity of inserts and holders for a low-effort start to lathe work.
• Holders built from 40Cr steel offer solid durability for general turning tasks.
• TIN-coated carbide inserts provide respectable hardness and wear resistance on steel and aluminum.
• Clear plastic boxes and labeled storage simplify inventory and reduce lost parts.

Cons

• All holders are right-hand; users needing left-hand tools must purchase a separate set.
• Some customers reported mixed chip durability and an occasional fastener issue, so expect normal wear and the need to monitor screws during intensive use.

Specifications

Package contents	3 tool holders, 33 indexable inserts
Holder models	MTJNR1616H16, MWLNR1616H08, MCLNR1616H12
Insert types	CNMG 431, WNMG 431, TNMG 331 (11 each)
Holder material	40Cr steel
Insert material & coating	Cemented carbide with TIN coating
Holder size	5/8 x 5/8 in (16 x 16 mm)
Overall length	3-7/8 in (100 mm), right hand

Our Verdict

This 36 piece indexable turning set is a sensible value for machinists who want a ready supply of common insert shapes and solid steel holders. It delivers easy storage, straightforward installation and inserts suited to mixed materials, making it a practical choice for general turning and light production runs where right-hand tooling is acceptable.

Frequently Asked Questions

Are these holders right-hand or left-hand?
All three tool holders in this kit are right-hand; a left-hand set is sold separately.

What size are the holders and inserts?
Holders are 5/8 x 5/8 in (16 x 16 mm) and 100 mm long; inserts are CNMG 431, WNMG 431 and TNMG 331 types.

How are the parts packaged for storage?
Inserts are packed in three clear plastic boxes and each holder is boxed and labeled for easy identification.