Step Drill Bit for Metal,1-3/8",Cobalt Drill Bits, | Heavy Duty for Stainless Steel, Hard Metal, Aluminum, Copper, Industrial Grade,5-Steps. Co138Z 7/8" to 1-3/8" beautytoolsUK_Aug2026 Widely applicable - suitable for

Widely applicable - suitable for use with upper shocks and/or sway bar end links

Applicable Medium:NBR Fuel line can work with diesel/biodiesel/gasoline/oil/grease/water and air

DRIVE COMPATIBILITY: Works with 2

radio switches

Step Drill Bit for Metal,1-3/8",Cobalt Drill Bits, | Heavy Duty for Stainless Steel, Hard Metal, Aluminum, Copper, Industrial Grade,5-Steps. Co138Z 7/8" to 1-3/8" beautytoolsUK_Aug2026 Widely applicable - suitable forStep Drill Bit for Metal,1 3 8",Cobalt Drill Bits, Heavy Duty for Stainless Steel, Hard Metal, Aluminum, Copper, Industrial Grade,5 Steps. Co138Z Industrial Grade Cobalt Step Drill Bit for Tough Metals The CO138Z Cobalt Step Drill Bit (7 8" to 1 3 8") is built for professionals who demand durability and speed when drilling through stainless steel, hardened metals, and thick alloys. Made with 3% cobalt steel (M2 grade), this 5 step bit delivers 5X