Powerhobby Z1 1.0" Aluminum Beadlock Wheels
Features:

CNC machined Aluminum wheels
Standard 1.0" wheel size
Standard 7mm hex mount
Internal Beadlock system
Fits all 1.0" tires
Includes:

4 Wheels w/hardware
Specs:

Outer Diameter : 31mm(1.22")
Width: 12.8mm (0.5")
Hex Mount : 7mm
Weight : 12g