This Broadway Limited HO Scale PRR Class B6sb 0-6-0 Switcher is an iconic Pennsy switcher used in a variety of locations around the system. Commonly known as ′shifters′ on the PRR, the B6 class was the railroad′s most successful steam switcher locomotive. 238 Class B6sb locomotives were constructed between 1916 and 1920. These locomotives were retrofitted with power reversers to make the frequent switching moves quicker and easier for crews that operated them. Class B6sb switchers could be found in major freight yards, passenger yards, and could occasionally be found on branch line duty. With over 36,000 lbs of tractive effort the 0-6-0s did their job effectively. Through World War I and II, they could be seen pretty much everywhere on the PRR. They were eventually pulled during the late 1940s and early 1950s in favor of diesel switchers. Today a single B6sb survives at the Railroad Museum of Pennsylvania located in Strasburg, Pennsylvania. These detailed models feature era-specific detailing and decoration, a flywheel-equipped drive and a die cast chassis for great performance. It′s equipped with the Paragon4 Sound/DC/DCC control system featuring Rolling Thunder and equipped with an integral GoPack capacitor pack for smooth operation during small losses of electrical contact. This model has wheels profiled to operate on Code 70 and larger rail and curves of 18′ radius, but larger curves are recommended. The Class B6sb 0-6-0 is one of many Broadway Limited HO Scale Paragon4 locomotives.