Tamiya Mini 4WD Gear Shaft for MA Chassis [Selected Motor Pin Processed Shaft] Front: 13.55mm x 2 Rear: 13.70mm x 2 Total: 4 pieces * Shaft play is designed to be zero on both sides. * Reduced play in counter 520 bearings using motor pins. * Adjusted using white chassis for both MA chassis [ABS] and MA reinforced chassis. * This part prevents torque loss without processing the gear shaft grooves, leading to improved drive performance. * 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. * Measurements are taken using a digital caliper that has been selected for its accuracy. ★☆These are made by disassembling and processing Tamiya motors, so they are almost unused. * Shipped via Yu-packet Post 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 or seek perfection. Please understand and agree to the above contents before purchasing. Thank you very much.