Drillco® Combination Drill & Countersink, #4, 1/8" Small Diameter, 5/16" Large Diameter, Carbide Diamond Hand Pads while the wide land and

while the wide land and substantial core thickness makes these tunnel bits durable even in large hammers

1/2" x 540"

Contains 2750 pieces - 32 sizes

Use with 13/16" hex socket or 3/8" square drive to restore M20x1

Drillco® Combination Drill & Countersink, #4, 1/8" Small Diameter, 5/16" Large Diameter, Carbide Diamond Hand Pads while the wide land andSolid carbide combination drill & countersinks (also known as centre drills) have strong shanks and flutes making them ideal for drilling and countersinking in difficult materials They may also be used in high production applications where tolerance finish and machine down times are considered Specifications Material Carbide Number Size #4 Small Diameter 1 8" Decimal Size 0. 125" Large Diameter 5 16" Countersink Angle 60 Overall Length 2 1 8" Finish