Drillco 11pc LH COB Screw Machine Drill Set (300LH11)
Drillco 300LH11 11pc LH COB Screw Machine Drill Set is built with M42 cobalt high-speed steel to provide exceptional abrasion resistance in tough metals. Designed for use in left-hand screw machines and compatible with screw extractors, this set is ideal for drilling out broken bolts and hardened fasteners. The set includes 11 left-hand drill bits stored in a convenient roll-up pouch, offering both performance and portability for demanding metalworking jobs.
M42 cobalt HSS for superior wear resistance in tough metals.
Left-hand design compatible with screw extractors.
Includes 11 pieces in a durable roll-up pouch.
Drills through hardened fasteners with ease.
Ideal for bolt removal and extractor operations.
Convenient storage and transport with included pouch.
Delivers long-lasting performance in industrial applications.
Technical Specifications:
Material: M42 cobalt high-speed steel (HSS).
Set Size: 11 pieces.
Application: Left-hand drilling, bolt removal, screw extraction.
Packaging: Roll-up pouch.
Country of Origin: USA
Product identification
- Brand: Drillco
- Model / MPN: 300LH11






