CyclingDeal Trainer Thru Axle - Bike Bicycle 12mm Rear Wheel Thru Skewer for Indoor- 160mm to 172mm - Thread Pitch: M12 x P1.75 - Spacers 2.5mm/6mm Included

STRONG & SAFE: Your safety is our 1st priority. The skewers are very strong because they are made of heat treated Cromoly alloy. Weight: 73g = 0.16lbs.NON QUICK RELEASE: Prevent removing wheels by hands. You must use 5mm hex wrench (NOT included) to remove the wheels.SPECIFICATION: Skewers Front Axles: 5mm x 112mm, Rear Axles: 5mm x 148.5mm.LONG LASTING: The skewers will be never broken or rusted. (Please apply some grease initially).