Wera 05138262001 Kraftform Plus 367 Torx Screwdriver, TX 20 Head, 4" Blade Length Kraftform Plus TORX BO Tamper-Resistant screwdriver, TX20 BO x 4 shaft Features TORX with Borehole to prevent the unauthorized unfastening of safety screws Handle markings include screw symbol and size of tip to easily find the right screwdriver Limited Lifetime Warranty, German Engineered