Gesswein 20 Piece Polishing Stone Set 1/2″ x 1/4″ x 6″ – 405-2075

• Offered in the most popular stone sizes.
• Include one size of 5 different types of stones in 4 different grits.
• Aluminum Oxide (EDM), White Aluminum Oxide (Oil-Treated GP), Aluminum Oxide (Diemaker) And Premium Silicon Carbide (Moldmaker Plus)
• Shape: Rectangular
• Grade:Medium to Very Fine
• Grit:120-400
• Made in the U.S.A.

EDM

• Remove the tough, hard scale left by the Electrical Discharge Machining process much faster than other stones.
• Contain an extra-sharp premium aluminum oxide for fast cutting action.
• Employ a special clay bond to hold their shape well for working small details sharp corners.
• Break down slowly, cut fast, resist loading.
• Suitable for use on both EDM and machined surfaces of all tool and hardened steels.

General Purpose

• Extra-sharp, pure white aluminum oxide grains, a specially formulated bond and proprietary treatment.
• Cut well, hold their shape and resist loading.
• Suitable for use on both EDM and machined surfaces of all tool and hardened steels.

Oil-Treated

• Hard, general purpose aluminum oxide stones excellent for machined surfaces
• Soaked with oil during manufacture; can be used dry without pre-lubrication.
• Offer fine cutting ability.
• Hold shape for finishing mold details.

Diemaker

• Medium hard aluminum oxide with the characteristics of fast cutting moderate breakdown.
• Ideal for general purpose stoning on hard and soft grades of mold steel and for pre-finishing aluminum, beryllium copper kirksite.

Moldmaker Plus

• Medium-hard, green silicon carbide stones breakdown slowly.
• Ideal for stoning contours and radii.
• Produce a silky matte finish on all pre-hardened tool steels, from 28HRC through 60 HRC, A2 M2.