Our grain bag spears are 30cm long and thus suitable for sampling a variety of grains and seeds from storage bags/containers.
There are two option for purchase:
1) The full set is available - 4 spears = 10mm, 12.5mm, 16mm and 19mm diameter
The 4 spears fit inside each other for ease of storage.
2) Single spear purchase - choose the spear with the diameter to suit your application.