Welcome to Winning Choice. Please take some time and visit our Store EDM - Set of 25, R39 E17 Replacement Light Bulb Motion Lamp 30 Watt Reflector Type Replacement BULB for any of our Lava Lamps R39 30 Watt Reflector type bulb. Approximate Measurements: 2.25"L x 1.5"W(Top of Bulb) Base Measures Approximately 1/2" Specially designed to reflect and direct the light into the base of lava lamps in order to create enough heat to start the lava motion. Thank you for checking our listings! We strive for 100% customer satisfaction! Postive Feedback is very important to us. We try our very best to make sure every customer is completely satisfied. If there's a problem, message us! We're happy to help. We will reply your email within 24 working hours. Payment: 1.We accept PayPal only. 2.All major credit cards are accepted through secure payment processor PayPal. 3.Payment must be received within 7 business days of auction closing. 4.We ship to your or Paypal address. Please make sure your and Paypal address is correct before you pay. Shipping: 1.We ship to your or Paypal address. Please make sure your and Paypal address is correct before you pay. 2.Items will be shipped within 1-2 business day once payment is received. 3.Delivery time depends on destination and other factors; 4.Items under 1 lbs will ship UPS Mail Innovations (Final Delivery USPS), items 1-9 lbs will ship FedEx SmartPost (Final Delivery USPS), items over 9 lbs will ship FedEx Home Delivery. Contact Us: - Customer service available Monday thru Friday 8am - 3pm EST. - Unsatisfied with your purchase? Please contact us before leaving feedback, we promise we will do our best to supply a satisfied solution. - Please don't leave neutral or negative feedback without communication first, it is not fair to seller and it can't resolve anything. Communication is very important when we are doing business.