Highcool Tamper Proof Tri- Nut Driver, for M8, M10, 3/8", 5/16", 7/16" Screw and Nuts, 3/8" Drive or 3/4" Wrench Use, With 1/4" Shank Adapter

Fits Multiple Nut Sizes – Designed to install and remove tri- nuts in 3/8", 5/16", 7/16", M8, and M10 sizes. must-have for working with tamper-resistant fasteners. Drive Compatibility – 3/8" Standard Square Drive, 3/4" Drive, 1/4" Drive. -Treated Molybdenum Alloy Steel Nuts Sold Separately – This listing contains one tri- driver and 1/4" shank adapter only. Tri- nuts are not included and must be bought separately.