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Threadsize information:
It can be smart to measure your old spikes before you buy. Here you have some thread specifications:
M6 --> 6mm outher diameter --> 10 threads per cm
M8 --> 8 mm outher diameter --> 8 threads per cm
M10 (NOT SUPPORTED) --> 10 mm outher diameter --> 6,67 threads per cm (use SuperSpike 2 SA or SuperSpike SA HE)
M12 (NOT SUPPORTED) --> 12 mm outher diameter --> 5,7 threads per cm (use SuperSpike 2 SA or SuperSpike SA HE)
1/4" --> 1/4 inch = app. 6,35 mm outher diameter --> 20 threads per inch = app. 7,8 threads per cm
5/16" --> 5/16 inch = app. 7,94 mm outher diameter --> 18 threads per inch = app. 7,05 threads per cm
3/8" (NOT SUPPORTED) --> 3/8 inch = app. 9,3 mm outher diameter --> 16 threads per inch = app. 6,45 threads per cm (use SuperSpike 2 SA or SuperSpike SA HE)
7/16" (NOT SUPPORTED) --> 7/16 inch = app. 10,1 mm outher diameter --> 14 threads per inch = app. 5,65 threads per cm (use SuperSpike 2 SA or SuperSpike SA HE)
1/2" (NOT SUPPORTED) --> 1/2 inch = app. 12,4 mm outher diameter --> 12 threads per inch = app. 4,85 threads per cm (use SuperSpike 2 SA or SuperSpike SA HE)
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