[silver 12mm]

[silver 15mm]

[silver 9.5mm]

uhlsport spike mandrels: normal steel spikes for square keys. Use: 6 mm = hall / plastic panel 9.5 mm = plastic track / frozen ground cross run 12 mm = plastic track / frozen ground cross run 15 mm = cross run rule: the harder the ground, the shorter the spikes quantity: 12 pieces per pack