PRO PERFORMANCE FOR HYBRID DRUMMING With exceptional trigger sensitivity, ultra-quick installation, and compatibility with the latest drum hardware, the streamlined RT-30 series sets a new standard for anyone wanting to explore hybrid drumming. Developed specifically for use on bass drum, the RT-30K provides fast and accurate triggering in a robust unit that?s simple to install. The newly developed self-guided mount automatically sets the sensor in the optimum position against the drumhead, with no fussy mechanical adjustment needed after mounting.Trigger1 (Head)ConnectorOutput Jack (1/4 inch Phone Type)AccessoriesOwner?s ManualLeaflet ?USING THE UNIT SAFELY? Stereo Cable (3.5 m, 11.48 ft) Guide for InstallationRim Height: 30?36 mm (1.18?1.42 inch) Rim Thickness (Max.): 12 mm (0.48 inch) SIZE AND WEIGHTWidth38 mm 1-1/2 inches Depth111 mm 4-6/16 inches Height62 mm 2-1/2 inches Weight95 g 0 lbs. 4 oz.