7/16 x 5-1/2-In. Cobalt High-Speed Drill Bit Nu Finish One-piece brass alloy contact arm

One-piece brass alloy contact arm for reliable electrical performance

They are crafted with extra sturdy

Just as easy is our Quick Chain Adjuster

Wash thoroughly with soap and water after handling

7/16 x 5-1/2-In. Cobalt High-Speed Drill Bit Nu Finish One-piece brass alloy contact armMaster Mechanic, 7 16" x 5 1 2", High Speed Steel With Cobalt Drill Bit, 135 Split Point Design With 4 Cutting Edges Allows Quick Penetration & Eliminates Walking, 8% Cobalt Content Provides Heat Resistance & Delivers Maximum Cutting Efficiency At Temperatures In Excess Of 1000&degree. F., Recommended For Drilling In Hard Metals Such As Heat Treated Steel, Stainless Steel, Chrome, Manganese Steel Plus Titanium & Armor Plate, Carded.