3-pieces cast-metal and blower belt material by Pro Tech.
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Rubber belt would have been better.
Just get it! Simple and easy-looks great and you cannot beat the price!
This kit is sweet! When you first look at it you might be a bit disappointed... but once it is on and finished it is bad ass! Typical ProTech affordable and perfect for your racer-i'bed used three sets and want to order another 5! I'm slot car drag racer and these are perfect for your blown motor applications, Gasser and Comp Coupe!
The Pro Tech Blower pulley set may not be machined billet aluminum but they are cast metal pulleys and the detail is very crisp with defined cogs and to be quite honest probably closer in appearance to what you would see on a street racer. So if your building a replica of a trailer show car spend the big bucks on machined pulleys but if your building replica of an actual racer these are perfect and affordable.
I'm no professional modeller, but I like to try for authenticity when affordable and possible. This is a perfect example. Since most model kits with blowers use a one piece plastic unit, it's easy to substitube the 3 cogs individually and then measure the belt material and glue at the bottom cog. There are other one piece cogged belts for 1/25 sold here also.