K&amp;K Sound Double Big Twin Upright Bass 4 Pickup Sensors w/Jack<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Four Sensor High Output Pickup System </span></li><li><span class="a-list-item"> Designed For Upright Bass </span></li><li><span class="a-list-item"> Wide Frequency Range， Excellent String Balance </span></li><li><span class="a-list-item"> Includes 1/4" Female String Jack; Bridge Not Included </span></li><li><span class="a-list-item"> Made in USA </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31enWiPIM4L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/418Ps-BU-1L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/511fj9Nb7cL.jpg" noproxy>