Flintronic 2 x Pupil Light Medicine, Diagnostic Light Nurse Emergency Service Accessories, with Pupil Meter & Ruler, Rechargeable USB LED Pen Lamp for Nurses, Students, Doctors 2pcs-silver June_2023_update It's for bass drums and

It's for bass drums and gongs

Ideal for Speakers that have the 1/4" connector and are being connected to receivers or amps that have the raw wires (red and black tabs)

easier portable than similar sheet music protectors

2 sets of rings (4 total rings)

connect the “in” of the cable end to the “out” of the device

Flintronic 2 x Pupil Light Medicine, Diagnostic Light Nurse Emergency Service Accessories, with Pupil Meter & Ruler, Rechargeable USB LED Pen Lamp for Nurses, Students, Doctors 2pcs-silver June_2023_update It's for bass drums andFlintronic 2 x Pupil Light Medicine, Diagnostic Light Nurse Emergency Service Accessories, with Pupil Meter & Ruler, Rechargeable USB LED Pen Lamp for Nurses, Students, Doctors Pack of 2 Flintronic Medical Diagnostic Penlight, a pen for all medical examinations. Functions: 1. The pressure switch in the middle of the pupil light feels comfortable, push forward for white light, push back for yellow light. 2. Hidden USB charging, no data cable required,