Check the listing for details. Mu-Metal Shield for 1-1/2 inch or smaller Photomultiplier Tube PMT 4X6 inches. Condition: Used. Listed at 14.95 USD. These Mu-Metal shields are in good used condition and will work well for 1-1/2 inch or smaller Photomultiplier Tubes. They measure 4 inches by 5.5 to 6 inches. Also perfect for use with 1-1/4 inch tubes like the R6095.They are currently soldered round as seen in the top of picture, but may ship flat in an envelope unless purchasing with other larger items that can accommodate shipping in there current round soldered state of about 40mm diameter. If you have a preference for shipping (flat or round), please let me know beforehand. I have tons of other radiation detection related equipment listed, so please check out my other items. I am always adding new items in this category, so please don't forget to add me to your favorites list and come back often!This listing is for only one shield. Please check my listings for other available Photomultiplier and Scintillator supplies. I ship very fast, same day if early enough, next day otherwise (except Holidays and Weekends).Thanks for looking. Check out my other items! Be sure to add me to your favorites list!