Size: 4.0mm
Short side: 21mm
Long side: 102mm

An L-wrench hex key, also known as an Allen key, is a simple yet essential hand tool used to tighten or
loosen bolts and screws with a hexagonal socket head. It’s named for its characteristic ‘L’ shape, which provides
two gripping points for better leverage and control.

Application:

• Used to drive bolts and screws with internal hexagonal (six-sided) sockets and grub screws.
• Manufacturing
• Electronics
• Construction
• DIY