TOOLS worth £20,000 were stolen from a business premises near Meadowhall.
Offenders entered through a rear fire door at the former Topps Tiles unit, which is currently being converted on Meadowhall Road.
The stolen items have names or the initials CJ, RG and SG written on them, police said.
Officers want to hear from witnesses or anyone with dashcam footage which could help enquiries.
Call 101 quoting crime reference 14/37402/20.