Borka Tools BTK-E1 Standard Configuration Adjustable Torque Driver Kit w/ Extension

The Borka Tools BTK-E1 is a Standard Configuration adjustable torque driver kit built for precise, repeatable fastener torque on optics mounts, scope rings, and other firearm accessories. At its core is the American-made BTD1070-IP torque driver, delivering a calibrated +/- 4% accuracy across a versatile 10-70 in/lbs torque range so screws are snugged to spec without being over-torqued.

The kit ships with three 4-inch ball-end extension bits designed for angled access without compromising torque transfer, including common firearm fastener sizes in 5/32" and 3/16". Every bit is machined from premium S2 tool steel, hardened to HRc 58-60, and finished in chrome plating for long service life under shop use. The driver accepts a standard 1/4" hex drive, keeping it compatible with the bits and sockets already on a gunsmith's bench.

Everything stores neatly in a rugged Cordura nylon pouch that keeps the driver and extensions organized at the bench or packed in a range bag. The complete kit weighs just 1 lb 6 oz and measures 8 x 5.5 x 2 inches, making it a compact, travel-friendly addition to any optics-mounting or gunsmithing workflow.