Package Included: 8x Kits (4 Kits for Flash Mute Training Wheels+4 Kits for Rubber Training Wheels )
1 Kit: 1*Screw Rod+1*Cap Nut+1*Safety Washer+1*Vertical Bracket.
Color: Silver Color.
Sizes for Flash Mute Training Wheels: 3.9 CM*2.8 CM*8 MM
Sizes for Rubber Training Wheels: 3.9 CM*2.8 CM*9 MM
Width of Vertical Bracket: 23 MM
Perfect fit for Children's Bicycle Flash Mute and Rubber Training Wheels