Molded from high density acetal polymer Histosette® II will keep specimens safely submerged and are totally resistant to histological solvents Compatible with leading brands of cassette labelers Unique front hinge allows single handed cassette manipulation. Integral lid can be opened and closed as often as necessary and will always relock securely without danger of specimen loss Packaged in two dispenser boxes of 500 with 1 dispenser box of 1000 lids Available in prestacked hoppers Available in 11 colors 1000 per case