Varia Instruments' turntable weights feature a smart mechanism: The 7" adapter inside the weight is moveable, as soon as you put the weight on a 7", the adapter will fall down through the big hole of the vinyl. Your record is now centered and stabilized by the TTW10. If you place the kit on a 12" record, the adapter will remain in the rear position and stabilizes your warped records. A sticky rubber mat on the bottom side protects your vinyl and allows you to control the record in a very direct way. The difference to the classic TTW10 is the material used for the outer part: The heavy weight edition is machined out of high-grade stainless steel which results in a final weight of 808g / 1.78lbs. The TTW10H comes in a neat printed box with a linen bag to take it out to your gigs.