this is a PRO-RC product:
Made for the TLR 8ight XT Truggy  
Material - 2mm thick carbon fiber
 
Note: carbon changes color in different light, some angel have a crome tint and others a white tint.   When install arm inserts into a used set of arms the inserts may not fit or will be tight because of the arm maybe bend or twisted from running on the track.
 
This is a option part that is stiffer than the stock plastic insert.
 
Being a thin perfomance part there will be no warrant once this product is installed on the vehicle
Note: take your time installing these inserts and make sure to not overtighten the screws
(never use counter sunk screws with this product)
 
This product does not use counter sunk screws.