Check the listing for details. Drum Single Trigger set for DIY edrum / For Use on Acoustic Wood Drum Shell. Condition: New. Listed at 25.99 USD. Goedrum DIY No.154Note : ★ Any dimensions given are not measured with specialist equipment and are not guaranteed to be accurate in engineering terms. ★ We will combine shipping if you purchase multiple items. At the purchase of all your different items, please click “request an invoice” from us, so we can adjust the invoice and apply a shipping discount for you. If you need any assistance, please contact us. Thank you! l This product comes exactly as shown in the main photo, and approximate dimensions are also as the photos. l This trigger can be installed under drumhead to transfer vibrations to most electronic drum sound modules. l It has a long 1/4" stereo jack socket, great for using on acoustic drum shell or thick drum shell. l Piezo-element Specification: TypeExternal drive type elementResonant Frequency2.9 ± 0.5 KHzResonant Impedance300Ω maxCapacitance30000pF ± 30% at 100HzInput Voltage30Vp-p maxOperating Temperature-20 to +60°CStorage Temperature-20 to +70°CBase MaterialBras l Assembly instructions are in the photos. (Example : wood drum shell, trigger is under top drumhead) : Will need to drill a 12mm hole on drum shell for installing the 1/4" jack. The jack with black wire is for drumhead sound, and the red wire is for rim sound. Return policy : Please contact us first if there is a mistake on your purchase. If a return is necessary, we can refund for the price paid minus shipping costs. Returned items must be in the same condition as you received them. Buyer pays for return shipping.