NSR 0.050" Precision Allen Driver – NSR4412 Heat-Treated Tip | Knurled Aluminum Handle | Ideal for #4-40 or M2.5 Set Screws A must-have tool for any slot car pit box, the NSR4412 Precision Allen Driver is designed for accuracy, durability, and control—well suited to racers who demand reliability when tuning their machines.

Key Features

0.050" (1.27mm) tip – fits #4-40 and M2.5 set screws used on gears, wheels, and motor pinions Heat-treated steel tip – resists rounding and wear for long-term use Knurled aluminum handle – offers a comfortable, non-slip grip even during quick adjustments Precision machining – ensures tight, accurate fit in set screws, preventing stripping Built by NSR, one of the most respected names in performance slot car parts, this tool is trusted by competitive racers worldwide.

well suited to Slot.it, NSR, JK, and other brands using 0.050" hex hardware Quick gear swaps, wheel adjustments, and fine tuning at the track or workbench Use with 1/32 or 1/24 scale slot cars

NSR Tuning & Special Orders

NSR offers a comprehensive range of tuning and upgrade components, and many of those parts are useful on other slot cars as well. NSR's Easy Setup and Tuning Guide is a useful reference for understanding how component choices affect different track conditions and racing rule sets.

We do not stock the complete NSR range at all times, but additional NSR parts are available by special order through OmniSlotBox at the SlotCarClubhouse.