The pointer is suitable for 30mm tubes only
Type 4 wheels fit the following scopes;
Sidewinder 30SF - 4.5-14x44, 6.5-20x44, 4-16x50 & Sidewinder 30 FFP 4-16x50
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Type 5 Wheels fit the following scopes;
Sidewinder 30SF - 6-24x56, 8-32x56 & Sidewinder 30 FFP 6-24x56