1.Color red 2.guide rod stainless steel 3.handle Alluminum alloy 4.screw 304 stainless steel 5.ISO ce (1)seat pad:design changing for left,right,front and back,satisfy with the requrements for the trainers of different figure,supply the best action conditions,the feeling of spining button is comfortable,brake by press down in the designing with action degree (2)reducing shake spring:professional ...