Honeywell® Howard Leight™ HL400 Disposable Ear Plug Dispenser with MAX®-1 Intro Package Genuine Honeywell® Howard Leight™ HL400 MAX® Earplug Dispenser comes complete with 400 pairs of MAX®-1 disposable earplugs. The turn knob and catch tray of this earplug dispenser package are treated with an antimicrobial additive, that improves cleanliness and worker hygene. MAX-1 earplugs are made from soft, contoured polyurethane foam and have a Noise Reduction Rating (NRR) of 33. They feature a bell-shaped design and a smooth, soil-resistant skin.Features Easy to use — workers can access earplugs quickly with easy twist knob Antimicrobial additive cleans the earplug surface Uncorded Dispenser is Compatible with all Howard Leight™ disposable earplugs MAXIMUM®, MAXIMUM® Lite, Laser Lite®, FirmFit®, and Xtreme® Easy to install — Universal hole positions eliminate the need to drill new holes and can be placed on flat surfaces Durable, recyclable plastic canister — with multiple refill options 400 pair refill of MAX®-1 disposable earplugs included The world’s most-used polyurethane foam earplug. Improved shape for easy insertion and a better fit. Bell shape for maximum in-ear comfort. Smooth, soil-resistant skin prevents dirt build-up. Un-corded bulk refills save time, space and reduce waste. NRR 33