Description:
Some wheel nuts are manufactured with a permanently fitted chromium plated cap. These start off from the factory as a whole size, but over time due to the combination of corrosion and impact tool use, the wheel nuts can swell by up to 0.5mm. This double ended impact socket has one end machined to 20.5mm and the other to 21.5mm to overcome this issue.

1/2"D with 20.5mm & 21.5mm single Hex. 
Designed to use with 1/2" short extension.
Damaged wheel (lug) nut removal sockets.
Ideal for Range Rover 21mm chrome covered nuts that have swollen.
Impact quality. 
Material :CR-MO

Package list:
1pcs socket: 20.5mm x 21.5mm