1/2" x 6" High Speed Steel | Extended Length Aircraft Extension Twist Bit | 12-Pack Size:0.5 (1/2") this is a serious work

this is a serious work horse that gives a great blend of material removal and wheel life

Lightning flap wheels are constructed of aluminum oxide/resin coated

Available in Black Phosphate

Application includes attaching drywall to light gauge (20-25) metal studs

A thicker wheel for increased life for tough

1/2" x 6" High Speed Steel | Extended Length Aircraft Extension Twist Bit | 12-Pack Size:0.5 (1/2") this is a serious workAircraft extension drill bits made from heat resistant cobalt steel for heavy duty construction application drilling high temperature and high strength alloys. Treated with a bronze oxide for wear resistance and identification. 135 split point design for more rugged and efficient drilling. Made from M42 Cobalt High Speed Steel for excellent wear resistance on high strength materials. For drilling in medium alloyed steel, stainless steel, hardened