Check the listing for details. 10 Unit High Temperature Thermocouple Insulators Ceramics Kiln Probe Sensor. Condition: New. Listed at 8.99 USD. Application For thermocouple High Temperature Range -58 to 2912 °F (-50 to 1600 °C) Insulator Quantity 10 Unit Insulator Shape Oval shape Insulator diameter hole(ɸ) 4.3 mm (~0.17 inch) Insulator Material High Temperature Ceramic Insulator length 25 mm (1 inch) Insulator diameter (ɸ) Oval shape: L=12.3 mm & W=10mm (L~ 0.5” & W~ 0.4”) Insulator Surface Fine Insulator Two-hole insulator ********** You name your inquiry, we produce it for you. For more information or ordering larger volumes please contact us. Our shipping service is fast for example: shipping to USA is 3-6 business days shipping to England and Ireland is 4-7 business days shipping to other Europe Countries 5-10 business days shipping to Canada is 2-7 business days shipping to Australia, New Zealand and Asia takes longer than other countries (17-25 Business days)