Secure carbide inserts inside these holders for stable turning. They’re also known as indexable insert holders. Select a holder that’s compatible with your insert by matching the insert style and inscribed circle diameter (IC). Right-hand holders move from right to left toward the lathe chuck, left-hand holders move from left to right away from the lathe chuck, and neutral holders can cut in either direction.

M-code holders secure inserts with both a top clamp and a pin lock, so they’re often used for interrupted or semi-interrupted cuts to keep inserts stable despite vibration. They’re the most commonly used holders with negative-rake inserts.

S-code holders secure inserts with a screw for easy indexing. They’re the most commonly used holders with positive-rake inserts.

C-code holders secure inserts with a top clamp, leaving space for you to add a plate-type chipbreaker between the insert and the clamp.

D-code holders require just a quick motion to remove inserts from their wedge clamp. However, they hold inserts less securely than M-code holders.

Holders with an offset shank are good for reaching into tight corners and when working close to the chuck.