Product Description
*** more curved down ***
1. Circumference halfway down shaft: 110
2. Circumference where shaft meets head: 90
3. Circumference at head's biggest point: 120
4. Distance from the base-ring to the tip: 100
5. Length of head (add 10-15mm of extra space): 60 mm (with extra space included)
6. Exit hole height (usually 21.mm): 21
7. Exit hole width (usually 9.mm): 9
8. Head covearge: 40%
9. Tube covearge: 40%
10.Spike height: 0