Pack-12 Supra MK Stiff 3/4" Natural Bristle Brushes-Unmounted With 1/8" Hole

Supra MK 3/4" Stiff natural bristle brushes are unmounted miniature brushes designed for professional jewelers and metalsmiths who demand consistent, even performance across flat, curved, small, and hard-to-reach surfaces. These brushes feature solid steel ring construction with filaments permanently anchored and uniformly distributed for even wear throughout the life of the brush. Made with natural animal hair, they deliver reliable stiffness for controlled finishing and polishing applications.

Each brush includes a 1/8" diameter center hole for use with compatible hub adapters and screw mandrels. Note that using a 3/32" diameter screw mandrel with this hole size will result in a loose, sloppy fit—use the correct 1/8" hardware for secure mounting. Otto Frei also carries natural bristle brushes with 3/32" diameter holes if that configuration is required.

Sold by the dozen.

*Supra does not manufacture extra soft bristle brushes. Extra soft bristle brushes are made in China.

Features

• Stiff natural animal hair bristles for controlled polishing and finishing
• Solid steel ring construction for durability and long service life
• Filaments permanently anchored and uniformly distributed for even wear
• 1/8" center hole for use with compatible hub adapters and screw mandrels
• Effective on flat, curved, small, and hard-to-reach surfaces
• Made in the USA

Specifications

Notes

Compatible hub adapters: 147.257 or 147.259. Compatible screw mandrels with 1/8" diameter screws: 143.160 or 143.162. Using a 3/32" screw mandrel with this 1/8" hole will produce an insecure fit—always match mandrel diameter to hole size.