Hormann pattern canopy garage door roller and cable assembly with no bearing. Suitable for pre 2002 Hormann canopy garage doors fitted with two overhead springs. 
 
Sold singularly in either left or right-hand.
 
This is a pattern Hormann product to suit the following Hormann part number:
Left-Hand: 1891003. 
Right-Hand: 1891004.
 
Tip: To determine if you need left or right-hand spares, stand inside your garage and look from the inside out.