The Tyler Ro-tap RX-29 sieve shaker has a capacity of 6 full height or 13 half height 8" diameter sieves. Heavy duty, stationary unit. Recommended for use in testing applications requiring material 635 mesh (20 microns) and greater in size. Rotating and tapping motions. Oscillations per minute: 278; Taps per minute: 150. Standard units for use with 8" (200mm) and 12" (300 mm) diameter sieves. Adapter kit for wet testing (8" only). A digital 99-minute clock/timer, accurate to .1 second. Noise level: 86dB. Sound enclosure and stand available new at extra cost (please inquire). NEW ITEM AND NOT KEPT IN STOCK, SO PLEASE CALL TO CONFIRM PRICE AND AVAILABILITY. Sieves, cover and bottom collecting pan are not included. Used ones may be available from stock, new ones are available by special order (at extra cost) with the purchase of a new sieve shaker.