Product Instructions:1. About switches of the Rotary Tumbler Jewelry Polisher, on the left is a timing switch. Turn the left is normally open, which is always opening; turn the right is the timing, set a few minutes and it will stop automatically. The right switch is the stalls, 1,2 ,3,4,5, each gear in the middle are separated by a stop2. The red switch is reversing switch (Positive &negative switching), and it is not the on/ off.Specification:Condition: NewVoltage: 110VPower: 150WCapacity: 5kgGlass barrel dimensions: 190*180(mm)Machine size: 28 * 22 * 29cmWeight: 6kgFeatures:Bidirectional rotation can be timed, optional five-speed. 5 speeds & timer from 10-60 minute.Rotary tumblers polish coins, clean cartridges, brass and other metals（It's just that some abrasives are different. Such as jade, it is impossible to use steel ballAbrasives with different polishing effects are also different.Anyway, the abrasive and the product to be polished rub in the barrel to achieve polishing）Barrel is multi sided, made of tough polycarbonate, are leak proof and will not corrode or rust, use with all types of media including steel shot.Package Included:1 x Polisher Base1 x Polishing Tank1 x Chain1 x Seal Ring1x LB Polishing Beads