The kits can be built up like real steering wheels:  
Spokes and rim are made of metal, 2 outer rims are made of real
plywood, and each kit contains material for making brass rivets.. 

 1 18 01 01 Real wood steering wheel kit 1:18, Type 1
 1 18 02 01 Real wood steering wheel kit 1:18, Type 2
 1 18 03 01 Real wood steering wheel kit 1:18, Type 3
 1 18 04 01 Real wood steering wheel kit 1:18, Type 4
 

 
MGB frm Kyosho and Jaguar XK SS from AutoArt
 

 Mercedes 300 SLR from Maisto
 1 18 06 01 Real wood steering wheel kit 1:18, Type 6                          
 

 Corvette from Revell
 1 18 07 01 Real wood steering wheel kit 1:18, Type 7                          

AutoMobilia-Collection http://www.automobilia.de