Triumph Twist Drill 099855 Drill Bit Set 29 Pc Hss

Product Description

The TRIUMPH TWIST DRILL 099855 is a 29-piece jobber length drill bit set built for heavy-duty drilling in metal, wood, and composite materials. Each bit is machined from high-speed steel and finished with a black oxide and bronze oxide coating that reduces friction and extends tool life. The 135-degree split point tip self-centers on contact, eliminating the need for a center punch and reducing walking on hard surfaces. Bit sizes run from 1/16 inch to 1/2 inch in 1/64-inch step increments, giving technicians a complete fractional range in a single metal storage case. This set is suited for HVAC, plumbing, electrical, and general mechanical trade work.

This drill bit set covers the full fractional inch range most trade professionals need on the job. The T180HDC series is designed for heavy-duty production and service applications where consistent hole quality and bit durability are priorities. The included metal case keeps bits organized and protected on the truck or at the shop. It is appropriate for use with standard corded or cordless drill drivers and drill presses commonly used by licensed tradespeople across HVAC, plumbing, and electrical installations.

Key Features

• 29-piece set covers 1/16 inch to 1/2 inch in 1/64-inch increments
• High-speed steel construction rated for heavy-duty drilling applications
• 135-degree split point tip self-centers and reduces bit walking
• Black oxide and bronze oxide dual coating reduces friction and heat buildup
• Jobber length geometry balances reach and rigidity for general-purpose drilling
• Metal storage case included for organized transport and storage

Compatibility

Designed as a general-purpose fractional inch jobber length drill bit set compatible with standard 3-jaw chucks on corded and cordless drill drivers and drill presses that accept round-shank bits up to 1/2 inch.

Installation Notes

Secure the bit fully in the chuck before operating the drill. Match drill speed to material type - harder metals require slower RPM and appropriate cutting fluid to prevent overheating and premature wear. Inspect each bit for signs of wear or damage before use. Follow applicable OSHA hand and power tool safety standards when operating drilling equipment on the job site.