This awesome Great working tool comes with many accessories with a few other collets to hold other size grinding bits.It looks like the motorized tool is made of Bakelite style plastic and we see no cracks or problems anywhere.It runs great also. The original owner died but took great care of the original Factory Dremel Moto-Tool Booklet (price $ .25 on the cover). and a few other Dremel tools catalog advertisements for 7 to 10 other tools Dremel made back in the 1950's .The front of the Case has a sticker says. Mod. 2 Cat No. 222