ISOTUNES IT-21 - PRO 2.0 Bluetooth Earplug Headphones TOL Expander 1/2" and 5/8" thread adapter

1/2" and 5/8" thread adapter nuts convert other hole saw brands to Snap-Lock Plus™

600 lb clamping force

the very best in protection for tools

plus a neoprene wrist cuff to help keep debris out

ISOTUNES IT-21 - PRO 2.0 Bluetooth Earplug Headphones TOL Expander 1/2" and 5/8" thread adapterProfessional Bluetooth hearing protector designed for all day use in the toughest and loudest environments. Sweat, water, and dust resistant with premium aptX sound quality, 27 NRR, and 10+ hours of music and talk time. 16+ hour battery life IP67 dust, water, and sweat proof Bluetooth 5. 0 Redesigned comfort fit earhook 27 dB NRR OSHA and NIOSH compliant SafeMax 85dB volume limit Chrome plated brass ear stem Background noise canceling for calls