The SG 553 Bulldozer is a CS:GO skin from The Chop Shop Collection and was introduced on 26 May 2015.
Steam Market
All CS:GO Bulldozer Skins
Introduced: 14 August 2013
The Assault Collection
Introduced: 27 November 2013
The Mirage Collection
Introduced: 26 May 2015
The Chop Shop Collection