The item arrived promptly and undamaged. When I unboxed it I noticed there were four empty places molded into the styrofoam for the reverse jaws. I contacted Vevor and they said the jaws are reversible. I have not yet tried to reverse them. The chuck came with hex head screws for mounting it instead of threaded studs. There is not a lot of room between the chuck back plate and the front of the spindle on my lathe and I may not be able to mount the chuck with the screws provided. I have studs if need be so no problem. The chuck itself is a Sanou K72-100 and well made. An excellent buy for the price. It came packed in grease and you have to disassemble and clean it for best performance so plan on spending some time cleaning it up before use.