Due to its corrosion resistance, rust resistance, wear resistance and high hardness, this dynamic bicycle pin can withstand harsh environments and long term use. Made of robust material with smooth surface, this spring knob is environmentally friendly, hygienic and easy to save effort. It is constructed of stainless steel material. The screw is 6.6cm in total length, and 3.8cm in width. It can be used for exercise bikes, bicycles, strength equipment, fitness equipment, etc. Item Name: Bike Spring Knob Material: Stainless Steel Features: Easy to Install, Durable, Sturdy, Strong Size Details: Total Length: 6.6cm/2.6" (Approx.) Width: 3.8cm/1.5" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bike Spring Knob