2pcs ZTTO Bicycle Spoke Aligning Tool Tensiometer Steel Wire Wheel Set Mountain Bike Rim Adjustment, ZTTO Bicycle Rim Adjustment1. Made of aluminum alloy material, it is firm and non deformable and durable. 2. It can accurately and accurately measure the tension of all the spokes in the wheel and the relative tension of all the spokes in the wheel. 3. Simple design is easy to use and read. 4. This is a bicycle spoke tension meter, practical, sturdy and stable. 5. Suitable for round spokes, flat spokes and tensioning of various finished wheel sets. Specification: Package Weight