Lisle 52750 Stethoscope Kit Description Dual Purpose Set Detects Both Mechanical and Air Induced Sounds. Use the black diaphragm chamber and screw-in metal probe to detect mechanical sounds from bearings, engines, transmissions, etc. For air induced sounds, attach the vinyl hose to the hollow tube and funnel assembly. The funnel amplifier will detect noises from vacuum leaks, exhaust leaks, air leaks and wind noise. For hard to reach locations, remove the funnel and use the hollow tube. Features: Dual Purpose Set Detects Both Mechanical and Air Induced SoundsUse the black diaphragm chamber and screw-in metal probe to detect mechanical sounds from bearings, engines, transmissions, etcFor air induced sounds, attach the vinyl hose to the hollow tube and funnel assemblyThe funnel amplifier will detect noises from vacuum leaks, exhaust leaks, air leaks and wind noise.For hard to reach locations, remove the funnel and use the hollow tube Product Details: Brand: LisleItem Weight: 2.56 ouncesProduct Dimensions: 14 x 5.2 x 2 inchesItem model number: 52750Exterior: SmoothManufacturer Part Number: 52750OEM Part Number: 52750Shipping Weight: 4.8 ouncesDate First Available: June 8, 2006 Payment We accept Paypal payments only. Sales tax may be applied to your purchase as we possess sales tax certificates for all states we collect sales tax in. If your state is one that we charge sales tax in, you will see the sales tax charge at time of checkout before you submit payment. Delivery Expedited shipping is free. Handling time on our orders is normally between 1-2 business days. Your order should reach you within 1-3 business days. We do not ship to AK, HI, PO boxes, or APO addresses. We're not responsible for any incorrect or undeliverable addresses. We only ship to the confirmed Paypal address. We don't accept requests to change shipping addresses post purchase. We do not ship to AK, HI, PO boxes, or APO addresses. We are not responsible for any incorrect or undeliverable addresses. We only ship to the confirmed Paypal address. Please note that manufactures update their packaging from time to time and that the packaging images shown in our product may vary from what you ultimately receive however be assured you are receiving the identical contents you ordered. Return Policy You may return new, unopened items within 30 days of delivery for a refund, and a restocking fee may apply. Return shipping fees are not refundable. Message us for return instructions if you have questions. Support & Feedback We take our reputation seriously, we buy and sell online, so we understand the value of trust. If you are unsatisfied with your order, please contact us and we will work with you to resolve it to your satisfaction. Contact us via eCRATER messaging and we will respond within 1 business day. Our office hours are 8AM-4PM PST Monday-Friday. We thank you for your business!