Professional tonearm arm lifter, safely and smoothly lifting the boom to enhances your listening experience. Easy to install, convenient to use. Features a triggering lift design, wide compatibility. Available for most bearing needle types, from single shaft to ptz. Height adjustable design can be configured to work with a variety of turntable tonearms. Base Size:approx. 16.1-22.3mm/0.63-0.88inch Height adjustable from 30.9mm/1.22inch to 54.9mm/2.16inch Colour:Silver Material:Metal Package Contents: 1 * Vinyl Record Player Tonearm Arm Lifter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.