1. It is light & portable. 

2. It is a useful tool for opening hex head screw. 

3. It can help with your repair and maintenance works at home.

Type A

On a Sunday morning, I was trying to dismantle my double decker bed to shift to another location. Unfortunately I was not able to dismantle it. I found out that all my screw driver cannot be used. The screw head are of Hex type. I needed a Hex Allen key. I have no choice but to go out to the mall to buy a set of Hex Allen key wrench. A lot of the screw on the bike are using Allen head screw.

Type B

Name: 6 Pcs Hex Allen key Set with Carabineer Snap Hook 

Size: 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm

Type A & B different is only the shape of the body.

Benifit

With the carabineer snap hook, you can hang the allen on your bag or wrist pouch.