Check the listing for details. 2pc Universal Metal Detector Cable Coil Fe Filter Block Eliminates Noise EMI RFI. Condition: New. Listed at 6.95 USD. 2 Piece SET UNIVERSAL Metal Detector NOISEBLOCKER Cable Coil Filter Black clip on in-line ferrite filter. A low-cost and effective way to reduce EMI & RFI electronic interference noise into your detector from external sources. In most cases, allows you run higher gain or sensitivity on most detectors while reducing noise or chatter associated with running high gain settings. Snaps into place over most coil wires (up to 9 mm or .354" in OD) just prior to the metal detector's control box. Grabs the coil wires from 5.5 mm or .212" and does not slide around. NO NEED for tape or cable ties to secure the filter into place! Can easily be installed or removed in a few seconds. For smaller cable size you may have to use tape or cable ties. NOTE: METAL DETECTOR NOT INCLUDED!! PACKAGE INCLUDES: 2- FERRITE NOISEBLOCKER COIL FILTERS Payments: We only accept payment by PayPal. Immediate payment is required. We charge sales tax for items shipped within FLORIDA; sales tax will be calculated at checkout. Shipping: We ship quickly. Orders are normally processed and shipped to the 48 continental United States within 1-2 business days. Please verify/confirm the correct shipping address at Ebay Checkout. If an item is returned due to invalid address, the return shipping cost of item shipped to invalid address will be deducted from refund. Shipping only applies to the 48 continental United States via USPS