Check the listing for details. Goedrum Drum Trigger for DIY Electronic Drum / Kick-Bass / For Metal Shell. Condition: New. Listed at 16.90 USD. Goedrum DIY No.10Note : ★ 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. l This trigger can be installed under drumhead to transfer vibrations to most electronic drum sound modules. l It has a 6.3mm stereo jack socket with 7mm thread, and approximate dimensions are also as pictures. 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 MaterialBrass l Assembly instructions are in the photos. (Example : metal drum shell, trigger is under top drumhead) 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.