Bel-Art Glove Box 8 in. O.D. Iris Port Entry (H50025-0020) Allows protected access without the use of long sleeve gloves to any glove box with  8 inch O.D. openings 30 points of pliant material afford easy access and withdrawal while maintaining an excellent seal around the arm Best for unconstrained use of delicate instruments inside the Glove Box where operations with gloves can be awkward Fabricated of ten layers of silicone latex rubber Does not disturb isolation conditions