uxcell Metal Bike Cycling Seat Post Quick Release Clamp Seatpost Binder Bolt Color: Silver Tone; Material: MetalPackage Content: 1 x Bike Seat Quick ReleaseDimension: 12 x 1.3 x 1.7cm/4.7&#34; x 0.5&#34; x 0.7&#34;(L*W*T)Male Thread Diameter: 6mm / 0.24&#34;