Good quality inserts. As far as I know, no worse than Ken's Metal. I'm not a commercial locksmith, but I do mechanical work on a regular basis. They work great with both soft and slightly hardened steel. I also use it successfully on stainless steel.
Machining Stainless with the GBJ S12M SCLCR06 CCMT060204: Enhanced Precision and Efficiency
3 Review
Excircle Indexable MTJNR1616H16 MWLNR1616H08 MCLNR1616H12
3 Review
431 CNMG 331 TNMG WNMG
3 Review
π§ Accusize Tools Carbide APKT1604 0056 1604X10: Superior Quality and Precision Cutting Performance
3 Review
High-Performance Bosch BS80 6W Bandsaw - 80 Inch 4 Inch Blades
11 Review
Enhanced Cutting Efficiency with Olson FB23370DB 0 025 2 Inch Blade
10 Review
POWERTEC 62-Inch 8-Inch Blade - Model 13132X
12 Review
πͺ Bi-Metal Cutting Blades: Imachinist S933414 - Enhancing Precision and Performance
10 Review