Cheapest Armstrong 19-940 3 Piece 3/8-Inch Drive Impact Locking Extension Set

Armstrong 19-940 3 Piece 3/8-Inch Drive Impact Locking Extension SetBuy Armstrong 19-940 3 Piece 3/8-Inch Drive Impact Locking Extension Set

Armstrong 19-940 3 Piece 3/8-Inch Drive Impact Locking Extension Set Product Description:



  • Made in the USA - quality and availability
  • Incorporates a pin on the square drive providing maximum security against accidental disengagement of the socket, safety
  • Socket is securely locked to the extension and will not disengage until knurled sleeve is pulled, safety and convenience
  • Manufactured from high alloy steel using the most up-to-date manufacturing process and heat treat for greater strength and durability
  • Recesses machined into female end is designed for new impact guns

Product Description

Item #: ARM19-940.

Features & Benefits:

  • Includes: 3/8" drive impact locking 3" extension; 3/8" drive impact locking 6" extension and 3/8" drive impact locking 12" extension
  • Lead in angle of 45 degrees allowing for easy installation of impact gun
  • Knurled sleeve is designed to encapsulate the retaining ring
  • Locking mechanism specifically designed for impact use
  • Recesses machined into female end is designed for new impact guns
This 3 piece extension set is designed with the male and female ends in line ensuring the positioning of the wrench handle and crows foot are always in the same position. Positive pin lock design prevents accidental socket removal. These high quality tools include a lifetime warranty and are proudly made in the USA!
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Customer Reviews

Most helpful customer reviews

0 of 0 people found the following review helpful.
5High quality locking extensions for impact work
By G. D. Cremer
These are deceptively simple tools - extensions for impact work - but they are extremely well made, smooth operating tools. Three useful length choices, nice finish, and very smooth operation of the locking sleeves. My sunex and S-K sockets go on and off without any binding, and the locking ring keeps the there. Great tool. Delivery was right on time and well-packaged.

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Buy Armstrong 19-940 3 Piece 3/8-Inch Drive Impact Locking Extension Set