The Skeg-Cover is a outboard and sterndrive lower unit skeg protector and no drilling skeg repair. The Skeg-Cover is installed with a 3M adhesive which is not supplied and can be purchased separately. Install the Skeg-Cover on a new lower unit to protect it from damage without any warranty issues due to drilling holes or to repair a already damaged skeg. The Skeg-Cover is sacrificial so upon impact along with the adhesive it acts like a shock absorber to protect the original skeg from damage. The Skeg-Cover comes in (1) size fits all from 60 h/p and up for all outboards and sterndrive lower units. The smaller outboard motors from 60h/p to 70h/p will require some fit which can be done with simple hand tools. For a complete installation guide and more info go to the you tube video at www.skegcover.com