screw/eccentric screw
1.the spec. is PX-10,PX-12,PX-14,PX-16
2.the weight is 60g,88g,105g,135g
3.for wheel alignment

the eccentric screw  for wheel alignment

Detailed information:

1.the spec. includes PX-10,PX-12,PX-14,PX-16

2.the diemeter of them is 10mm,12mm,14mm,16mm

3.the color of them usually is black

4.Market:wheel repair shop