Sterile Disposable Dermal Curette, Sklar, Assorted. 5 Each of 2mm, 3mm, 4mm, 5mm and 7mm. - Box of 25. Sklar's Sterile Disposable Dermal Curettes are used for scraping skin lesions and growths such as warts or melanomas. They are single ended instruments available with a round loop tip. The loop is sharp on the inside and blunt on the outside so the lesion can be removed but surrounding skin is not damaged. This product has a steel tip, a plastic handle, and an overall length of 5-1/2 inches. This product is sold in boxes of 25. It contains 5 of each curette with tip sizes 2mm, 3mm, 4mm, 5mm, and 7mm.