· 6 resistance springs w/ 3 levels of adjustments.

· 2 red heavy resistance(60lb).

· 2 blue medium resistance(26lb).

· 2 yellow light resistance(19lb).

• There are stainless steel plates inside the shoulder rest, which are very durable and heavy. And there are 2 gears can be adjusted, if you turn the shoulder 360 degrees, you can adjust the other 2 gears, the shoulder base is 304 stainless steel, the thickness is 5MM, durable.

• Each track is equipped with an anti-collision device, and there are five holes on the track, which you can adjust yourself.

• The track is made of aviation aluminum, hard oxidized, and has a thickness of 4 mm.You can use scissors, you can use a blade, you can use a sharp instrument to cut this track, and the track will not be affected. It is very durable and wear-resistant.

• The handle bar is made of 304 stainless steel, mirror polished, the thickness of the disc is 5.3MM, and the thickness of the handle bar is 10MM. It has seven gears you can adjust.

• The universal wheel can be adjusted 360 degrees, and the height can also be adjusted by itself.Very convenient.

• Special material lock rope, not bad for a hundred years, hook is 304 stainless steel, very strong.
• High strength nylon fiber rope, no fuzz and deformation.
  

• The factory comes with non-slip stickers, safe and intimate.

• Special PU wheel, more convenient to move.

• The skateboard is placed on the frame of the bed and can be moved slowly.It has two small tracks and eight wheels, and the spring is also mounted on this skateboard.

• You can put a Anti-skid plate.
• The anti-skid plate is made of Solid wood multi-layer board. There is a non-slip mat on the surface, this mat comes from the American 3M brand, and the viscosity is very good.
• Note: When placing the board, place the stainless steel face toward you and vertically down, then tighten the star nut underneath.
  

• You can put a padded platform.
• This board has sponges inside it, which makes it more comfortable for your feet.
• Note: When placing the board, place the stainless steel face toward you and vertically down, then tighten the star nut underneath.
  
  

  
  

• You can put a jumpboard.
• It is very important to have a lever as a support when using the jumpboard.
• Note: When placing the board, place the stainless steel face toward you and vertically down, then tighten the star nut underneath.