Detectives investigating an armed robbery in Chorlton have released a CCTV image of the two suspects.
Following the incident earlier in the week a Â£5,000 reward has also been offered by a company who want to remain anonymous.
The robbery happened at about 1.55pm on Wednesday 9 April 2014, when two men wearing dark clothing and motorbike helmets walked into the Co-op on Barlow Moor Road.
They threatened security staff who were making a cash delivery to an ATM inside the shop, the robbers grabbed the cash box and ran out the supermarket.
They left on a motorbike in an unknown direction.
Detective Constable Mark Evans from South Manchester division, said: â€œWe have released the image of the two robbery suspects and we would urge you to take a close look at the still.
â€œWe are keen to hear from anyone who may have witnessed the robbery or saw the offenders fleeing on a motorbike? You may know who is responsible or recognise the men in the photograph.
â€œA Â£5,000 reward has also been offered for information leading to the arrest and conviction of those guilty of attacking the security staff and business earlier this week.
â€œThe threats towards the staff have left them shaken but thankfully they were not physically injured and they can be reassured we will do all we can to identify the offenders.â€
Anyone with any information is asked to contact police on 0161 856 4991, or Crimestoppers, anonymously, on 0800 555 111.