... : Positioning precision,Safely self-locking,Heavy duty,Uniform lifting speed,small sizes,easy installation. 1.Model: RN-0.5T,1T,2T ... : Positioning precision,Safely self-locking,Heavy duty,Uniform lifting speed,small sizes,easy installation,low noise,long life,security and environment ... Care, Culture, Health and Others Industries JWSS11-T Worm Gear Linear Actuator