When using Fletch-tite cement, we recommend that you clean the shaft first, then apply cement to the vane for best adhesion. Marco vanes are stocked in hi and low profile and both feature a narrow base. Available in 100 packages. If you receive an item that has been damaged in transit, you may return it for a replacement, exchange, or refund. If you do receive a damaged item, please contact us within 10 days of receipt for an RMA number. A 20% restocking fee will be charged unless a mistake was made on our part. All items must be returned in the original packaging and require a RMA number.