The YakAttack GT175 Generation II GearTrac Mounting System adds a whole new level of versatility to your kayak, canoe, power boat, ATV, ORV, tractor, or other vehicles. This adjustable, heavy duty surface mount track is fully configurable, enabling unparalleled versatility for accessory mounting. Includes #10 blunt tip stainless steel thread forming screws. Install with the optional FullBack backing plate for ultra duty security. The GT175 Generation II GearTrac is a true surface mount and doesn’t require inside access for instillation. YakAttack Generation II GearTrac Mounting System Features: Designed for harsh marine environments Compatible with 1/2" wide track hardware Topside installation, no backside access required Hole pattern 1-5/16" Wide x 1-3/4" Long