Étau à boule TUNA Microblock avec jeu d’accessoires porte-anneau intérieur

The TUNA Microblock Ball Vise with Inside Ring Holder Attachment Set is a precision holding tool designed for professional jewelers, stonesetters, and engravers. Featuring a matte stainless steel construction and smooth ball-bearing rotation, this microblock delivers stable 360° workpiece access whether you're working under a microscope, magnifier, or at the open bench. The included 18-piece expandable collet set and accessory hardware make this a ready-to-use system for a wide range of ring sizes and holding tasks.

Features

• Matte stainless steel finish resists glare under bright bench and microscope lighting
• Precision ball bearings provide smooth, even 360° rotation
• Self-centering jaws maintain secure, even pressure on the workpiece
• 18-piece expandable collet set accommodates rings from size 4–16 (15mm–25mm ID)
• 18 mounting holes (3.7mm diameter), including 6 threaded, for flexible attachment configurations
• Peg set extends max jaw opening to 2.88" (72.5mm) for larger workpieces
• Suitable for use with microscopes, GRS-style systems, Optivisors, and similar magnification setups
• Compatible with flex shaft and micromotor handpieces for stonesetting and engraving applications

Specifications

What's Included

• 1 TUNA Microblock ball vise (matte stainless steel)
• 18-piece expandable ring collet set
• 4-piece peg set
• 6 hex nuts
• 2-piece hex key set

Notes

This product is tagged for California Proposition 65 (Nickel). While optimized for microscope and pneumatic engraving systems, the TUNA Microblock performs equally well in manual setups using bench magnifiers or Optivisors.