Kit de 31 fresas Busch, figura 156C, Hart de 90 grados, de 0,70 mm a 4,0 mm

A 90 degree hart bur cuts the bearing and seat a stone sits in. Busch Fig. 156C (European Fig. 414) 90° hart burs are among the most widely used bearing and seat cutting burs in professional jewelry work, and this kit puts one bur in each size from 0.70 mm through 4.00 mm on the bench, every one on a 3/32 in (2.35 mm) shank.

The burs are made from tungsten vanadium steel and manufactured to ultra-high precision tolerances, giving a uniform, controlled cutting action across the whole range. Sizes correspond to the European Fig. 414 and USA Fig. 156C standards. The kit arrives in a plastic bur box with 48 holes for 3/32 in shank burs.

Features

• Complete size range from 0.70 mm to 4.00 mm, 31 burs in all
• 90° hart (bearing cutter) profile for accurate seat cutting
• Tungsten vanadium steel, manufactured to ultra-high precision tolerances
• Uniform cutting action with smooth, controlled performance
• Sizes correspond to European Fig. 414 and USA Fig. 156C standards
• 3/32 in (2.35 mm) shanks throughout
• Supplied in a plastic bur box with 48 holes for 3/32 in shank burs

Notes

The product image is for illustration only and may show carbide burs with yellow rings on the shanks. The burs in this kit are tungsten vanadium steel and do not have yellow rings on the shanks.