Otto Frei–BORE Jewelers Drill Bit Basic Kit with 150 HSS Twist Drills Sizes #51–#80 Bezel Blocks Replaceable ceramic tips extend the

Replaceable ceramic tips extend the working life of the tool

use reference needles or gold samples of verified karat content

Model MADCH-6 Fishmouth Width (Back) 9-1/2" Fishmouth Width (Front) 6" Fishmouth Depth (Front to Back) 8-3/4" Fishmouth Height (Bottom of Exhaust Port to Back) 9" Curved Shield Width (Top) 8" Curved Shield Width (Bottom) 5" Curved Shield Height 10-1/2" Exhaust Port Hose Size 2-1/4" Mounting Type GRS-style mounting bracket Assembly Weight 6

Adjustable rotational resistance: Fine-tune drag to suit your working style

Otto Frei–BORE Jewelers Drill Bit Basic Kit with 150 HSS Twist Drills Sizes #51–#80 Bezel Blocks Replaceable ceramic tips extend theThe Otto FreiBORE Jewelers Drill Bit Basic Kit combines the precision of HSS twist drills with the smart organization of the BORE drill holder by Nashef Designs. This complete master kit includes 150 HSS twist drills in sizes #51 through #80, neatly arranged in a 3D printed organizer with labeled compartments and a clear viewing window. Compact and thoughtfully engineered, it keeps your most frequently used micro drill sizes visible, protected, and