Type 1 Description: Made of qualified nylon and silicone material, durable, lightweight and high strength. Offers a smooth full range of motion, quick release and easy installation for your track system. Bigger ball design provides a much greater clamping force for larger accessories. Complete flat surface, drill-down mounting solution, designed to accept large fish finders Mounts ball and socket technology allows for near-infinite adjustability. Specification: Material: Nylon Color: Black Size Chart: Size: approx. 165x160x54mm/6.50x6.30x2.13inch Ball base: approx. 67mm/2.64inch Square base: approx. 101x52mm/3.98x2.05inch Type 2 Description: Made of quality nylon, impact-resistant, scratch-resistant, strong bearing capacity, not easily damaged. Bigger ball design provides a much greater clamping force for larger accessories. Offers a smooth full range of motion. Designed to accept large finders. Universal for canoes and kayaks. a good accessory for outdoor finder and GPS. Size Chart: Size: 10x10x5cm / 3.94x3.94x1.97inch. Type 3 Description: Made of qualified nylon material, durable, lightweight and high strength. Offers a smooth full range of motion. Bigger ball design provides a much greater clamping force for larger accessories. flat surface, drill-down mounting solution with an overall height of 6". Quick release and easy installation for your track system. Mounts ball and socket technology allows for near-infinite adjustability. Compatible with Garmin 162, 168, 175, 180, 180C 182, 185, 188, 232, 238; For Garmin Striker 5 Series; For Garmin Striker Plus 5cv. Specification: Color: Black Material: Nylon Size: 160X54X150mm Package Includes: 1 Piece Fishfinder Mount Type 4 Description: Size: Base Mount dimensions 10cmx10cm/3.94inchx3.94inch, Mount height 16.5cm/6.50inch Material: Fish finder base is made of nylon, durable, lightweight and high strength Easily Install: Quick release and easy installation for your track system Notes: The package only include a fish finder mount base, not include fish finder Fishfinder Mount: Universal top plate to mount your fish finder. Good accessories for fishing Specification: Material: nylon Size Chart: Size: Base Mount dimensions 10cmx10cm/3.94inchx3.94inch, Mount height 16.5cm/6.50inch Package Includes: 1 Fish Finder Mount Note: Colors might be different due to different monitor display. Manual measurement may cause slightly difference in size.