Wera 3867/1 TS TORX 25 insert bit for 1/4" drive is designed to keep rust at bay. Wera's Stainless tool line is manufactured from 100% Stainless steel, preventing extraneous rust caused by use of conventional tools contaminating stainless fasteners. Wera's unique vacuum ice-hardened process gives the necessary hardness for industrial applications. Torsion (TZ) bits are designed to prevent premature wear for improved service life. Stainless bits partnered with Wera's stainless Rapidaptor will protect the full length of the bit against extraneous rust. Ice-blue design features make the stainless tools easy to identify. German engineered. Bit dimensions: 1/4” hex drive; TX25 x 1". Wera – The Best Tools For The Job!