This is a genuine Sandvik Coromant SI-CTLHOR-08123 Top-Lok® indexable internal grooving and boring bar. Sandvik Coromant is a world-leading Swedish manufacturer of premium cutting tools known for precision, durability, and innovative clamping systems.

Key Specifications:

• Model: SI-CTLHOR-08123 (Top-Lok series)
• Type: Internal grooving / boring bar with Top-Lok clamping system
• Overall length: 12"
• Minimum bore diameter: ~1.376" (34.95 mm)
• Hand: Right Hand
• Clamping system: Top-Lok® (lever/pin design that locks the insert against the back and side of the pocket while pulling it down securely)
• Compatible inserts: Sandvik Coromant Top-Lok grooving inserts (specific geometry for internal grooving and parting)
• Shank: Round steel shank designed for internal applications

The Top-Lok system provides excellent rigidity and repeatability, making this bar ideal for precision internal grooving, threading, and boring operations on lathes. It is commonly used in production environments where reliable chip control and insert security are critical.

What’s included: The complete toolholder with the installed grooving insert. No original packaging or additional inserts.

Condition & Notes: Used but in good, fully functional condition. Visible surface rust and normal wear on the clamp area are present (as shown in photos) but do not impair operation. The clamping mechanism works smoothly. This is an excellent opportunity to acquire a high-quality Sandvik Coromant Top-Lok grooving bar at a fraction of new-tool pricing (new equivalents often exceed $350–$400).