These Sponge forceps are fully autoclavable, and being made from 410 Surgical Steel, these tools will not rust. Available in two sizes, mini and standard, these forceps measure 6.5" overall in length. The standard size measures a 7mm diameter at the top, 12.5mm in length of the inner round clamp, and 4.4mm at the slot opening. The mini size measures a 5.5mm diameter at the top, 8mm in length of the inner round clamp, and 2.3mm at the slot opening.