J & J Instruments: Compare our scalers and curettes with the best in the industry and you will immediately recognize we are equal in every way but one... price. Note the deep precision knurling for better tactile feel. The same high-grade German 440 stainless steel tips, the same light weight (under 20 grams)for less hand fatigue, the same professional craftsmanship, and surpassing the highest industry standards. Of course, any manufacturer can make these claims, but we guarantee and certify ours.