Irwin Industrial Tool Co 4935703 Quick Chuck Extension

Product Description

The IRWIN INDUSTRIAL TOOL CO 4935703 is a 2-inch Quick Chuck Extension designed for 1/4-inch quick-change drive systems. Built with a carbon steel sleeve and body, this extension delivers durable performance in demanding trade and jobsite environments. The patented jaw design grips bits securely on 6 flats as well as ball detent bits, while the Lock-N-Load system allows for one-handed quick release without fumbling. It accepts standard 1/4-inch insert bits and is engineered to work across a wide range of accessories including spade bits, fastener drives, step bits, hole saw arbors, and countersinks. Electricians, plumbers, HVAC technicians, and general contractors working in confined spaces will benefit from this compact extension.

This extension is suited for residential and light commercial construction and service work where extended reach and fast bit changes are essential. It is commonly used in framing, electrical rough-in, plumbing, and HVAC install scenarios where drilling clearance is limited. The 2-inch length adds reach without significantly altering chuck-to-work distance, making it practical for tight cabinet or wall cavity work. It ships in a package quantity of 6, making it a practical stocking item for supply rooms or field kits.

Key Features

• Patented jaw design grips bits on 6 flats and ball detent styles for a secure hold
• Lock-N-Load system enables one-handed quick release for fast bit swaps
• Carbon steel sleeve and body construction for long service life
• Accepts 1/4-inch insert bits and works with multiple accessory types
• Compatible with Irwin Speedbor Blue Groove and Speedbor Max spade bits in sizes 7/16 inch to 1-1/4 inches
• Works with Unibit sizes 1, 2, 10, and 12, hole saw arbors from 9/16 inch to 1-3/16 inches, and countersinks sizes 4 through 12

Compatibility

Compatible with Irwin Speedbor Blue Groove bits, Speedbor Max bits in sizes 7/16 inch to 1-1/4 inches, all fastener drives, Unibit sizes 1, 2, 10, and 12, 1/4-inch hole saw arbor sizes 9/16 inch to 1-3/16 inches, and countersinks sizes 4 through 12.

Installation Notes

Install and remove this extension by hand — no tools are required to seat or release bits using the Lock-N-Load mechanism. Ensure the drill or driver is powered off and the trigger is locked before changing bits or attaching the extension. Inspect the jaw and detent mechanism periodically for wear or debris that could reduce holding force. This accessory is intended for use with rotary drills and drivers; do not use with hammer-drill mode engaged.