Unior Industrial Strength Nitrile Mechanic Gloves - Box 100 X-Large. Unior's Heavy Duty Nitrile Mechanic's Gloves are perfectly suited to protect you from all manner of workshop hazards: oils cleansers sealants that gunk that builds up on derailleur pulleys and so on. They're 6 mil thick for extra protection and extra strength. We make these gloves powder-free so they're neat and tidy and the nitrile construction means you don't have to worry about any sort of latex allergens. Each box contains 50 pairs.