Hertel C.E96.S13D Aircraft Extension Drill Bit Set 13pc

Product Description

The HERTEL C.E96.S13D is a 13-piece aircraft extension length drill bit set designed for metalworking and general-purpose drilling applications where standard-length bits cannot reach. Built from high-speed steel with an oxide finish, each bit features a 135-degree split point for fast starts without center-punching and reduced walking on curved or flat metal surfaces. The set spans from 1/16 inch to 1/4 inch in 1/64-inch step increments, giving technicians a precise range for progressive hole sizing. Overall bit length is 12 inches, providing the reach required for deep cavities, structural panels, and confined work zones common in mechanical and fabrication trades.

This set is suited for metalworking and multipurpose drilling tasks in both shop and field environments. The extended 12-inch length makes it particularly useful when working through thick structural members, deep flanges, or layered panels where conventional jobber-length bits fall short. The 1/64-inch step increments allow technicians to step up hole sizes incrementally, reducing the need for multiple tool changes and minimizing material stress. Bits are stored in a metal open stand for organized access on the bench or in a service van.

Key Features

• 135-degree split point for self-starting cuts and reduced bit walking on metal
• High-speed steel construction rated for heavy-duty metalworking performance
• Oxide finish for surface hardness and basic corrosion resistance
• 12-inch overall length provides aircraft extension reach for deep or obstructed work zones
• 13-piece set from 1/16 inch to 1/4 inch in 1/64-inch increments
• Metal open stand storage for organized bit access

Compatibility

Designed for use with standard 3-jaw drill chucks in electric drills, drill presses, and right-angle drill attachments configured for inch-measurement bits up to 1/4 inch shank capacity.

Installation Notes

Drill bit sets of this type are installed and operated by machinists, millwrights, HVAC technicians, electricians, and general mechanical trades. Secure the workpiece before drilling and confirm the drill chuck is rated for the bit shank diameter being used. When drilling ferrous metals, apply cutting fluid to extend bit life and manage heat buildup. Inspect each bit for chipping or runout before use and replace any bit that shows signs of heat discoloration or tip damage.