When installing Quantum Flex™ Markers, it is recommended that you use a Quantum Flex
D-375 post driver. The driver is easy to use and greatly reduces the installation time. The D-375
post driver will fit both the QM-375 and the QM-250 marker profile. No need to carry 2 separate
installation tools if working with both marker styles. The D-375 post driver holds the marker
rigid during the installation process, preventing the marker from flexing. This concentrates the
driving energy through the marker into the soil thereby allowing the marker to be driven into
very hard soil conditions.
Quantum Drivers are made in the USA and are constructed of welded steel with a bright high
visible orange powder coat finish for durability. The driver weighs 25 pounds, is 45 inches in
length and has easy grip handles for ease of handling.
QM-375 & QM-250