Fierce – Spacer Kit (half box – 7 sets) Half kit of high quality spacers – maximise the performance capabilities of all your wheels and bearings. 7 different sizes of ultralight, super high precision aluminium spacers – 8 pieces in each size. Use in combination with the Fierce Spacer Gauge to give an exact spacer measurement on each wheel. Sizes: 9.975 / 10.000 / 10.025 / 10.050 / 10.075 / 10.100 / 10.125