counterweight with joint stabilizer with adjustable clamp from 15 to 25mm. If you add the phone lens, filter, the balance will never be a problem again. Allows to attach protective cases and lens setup on the smartphone when it is with gimbal.Compatible with Zhiyun Smooth 4, Smooth Q, Feiyu Vimble 2, DJI Osmo Mobile 2, Evo Shift and most other smartphone stabilizers.This counterweight allows you to add a lens to your smartphone without losing balance when using it with your Gimbal Stabilizer. Adjustable design allows you to perfectly balance and calibrate your body and lens. Support for different needs.High quality aluminum alloy material, CNC machining, durable and good finish.Comes with 4 small weights (10g each) for more flexible and convenient use, best support max 64g, excellent support to meet different needs. Rubber pad keeps the gimbal safe and the weight locked in.