Made in England, Klein burs are equal to any of the better known brands of Tungsten Vanadium Burs. Available in the most popular sizes and shapes, Klein burs are manufactured on the most modern equipment with methods which give Klein burs the edge in economy without sacrificing quality. All are total length of 44.5mm with 3/32" (2.35mm) shanks for quick-change handpieces. Try Klein burs, we guarantee your satisfaction. Cup burs, 6 Pack, 1.80 millimeters