Tamiya Mini 4WD MS Chassis Counter Gear Shaft [Selected Motor Pin 13.43mm Processed] x 4 Set *Adjusted for both MS Lightweight Chassis [ABS] and MS Old Chassis [ABS] in black. *This part prevents torque loss by not processing the gear shaft groove, leading to improved drive performance. *Verified with MS Flex processing. *Selected and used due to individual differences in motor pin thickness. *Selected gear shafts using 12 520 bearings due to individual differences in 520 bearing hole diameters. *Measured using a digital caliper selected for its high accuracy. ★☆These are close to unused as they are made by disassembling and processing Tamiya motors. *Shipped via Yu-Packet Mini. ★☆Must Read☆★ *Handmade by an amateur. *No individual sales. *No discounts. *Stored at home. *New and unused, but may have minor scratches. *Please judge the product condition from the images. *Please refrain from purchasing if you are sensitive to imperfections or seek perfection. Please understand and agree to the above before purchasing. Thank you very much.