The Borka Tools Precision Torque Limiter kit packs two preset torque limiters, a 4 inch-lb unit and an 8 inch-lb unit, into one case (Borka Tools part no. PTL004008K2). Its suggested application is Nightforce and Vortex turret set screws, where the right torque matters. The PTL is based on a compact industrial torque limiting design calibrated in accordance with ISO-6789. It is preset to its torque value at the factory, so you get repeatable results every time you tighten a fastener.

Key Specifications

• The kit includes a 4 inch-lb precision torque limiter.
• The kit includes an 8 inch-lb precision torque limiter.
• A PTL Gear knurled drive adapter is included for turning the limiter by hand.
• The bit set includes two 5/64 inch hex bits, a 1.5mm bit, a Torx 6 bit and a 1/16 inch bit.
• A 4 inch long screwdriver bit extension is included for reaching recessed screws.
• Each limiter is calibrated in accordance with ISO-6789 and the kit includes a calibration certificate of accuracy.
• Everything ships in a tough, impact-resistant case with custom foam.

Frequently Asked Questions

What is the kit meant for? Borka Tools lists the kit for Nightforce and Vortex turret set screws.

Can I use the torque limiters with a power driver? No. Borka Tools warns never to use a PTL with motorized drivers, since it causes excessive wear and can damage the torque limiting mechanism.

Is the torque value adjustable? No. Each PTL is preset by the manufacturer to a specific torque value and is not user adjustable.

Buy the Borka Tools Precision Torque Limiter Kit, 4 and 8 In-Lbs

Over-tightening a turret set screw is an easy mistake and a hard one to undo, and a preset limiter removes the guesswork. Order this kit from our Lubbock, Texas shop for fast direct shipping, and see more gunsmithing tools while you are here.