Cobalt Jobber Drill Set Imperial: 1/16" - 3/8" x 1/64" Rises | 21pc 66 Drive Links Includes 2

Includes 2

a thermal process resulting in a porous tool coating

Narrow cutting joints

The newly exposed diamonds again will wear

Long lasting – high wear resistance

Cobalt Jobber Drill Set Imperial: 1/16" - 3/8" x 1/64" Rises | 21pc 66 Drive Links Includes 2Cobalt Jobber Drills have a Bronze Finish (gold oxide). This metallic brown coloured low temperature temper treatment is used on cobalt tools for identification purposes. Cobalt HSS drills are extremely hard and provide superior performance and increased tool life especially in stainless steel and high tensile steel. Cobalt Jobber Drills Imperial: 1 16" 3 8" x 1 64" Rises 21 Piece Set