PIT HOLDER Mini 4WD Heat Sink Compatible Compact Motor Holder ※ This product does not include a heat sink. Only the holder is included. Designed for "immediate use" in race scenes, this compact and highly durable motor holder. It can be installed with the heat sink attached, powerfully supporting speedy motor management and break-in work on site. The space-saving design is also excellent for portability, making PIT work more efficient and reliable. ＜Material＞ Heat-resistant ABS resin Highly conductive copper terminals ＜Features＞ ■ Can be set with the heat sink attached Allows break-in work while keeping the motor body temperature down. Realizes the optimal usage environment without the hassle of attaching and detaching. ■ Space-saving & Portability Compact design that is easy to handle even in the limited work space of a race venue. Ideal for those who want to minimize their tools. ■ Compatible with RaceMate's "Motor Selector 2" Developed to improve the contact pressure that is difficult to stabilize with the included holder. Provides a more stable measurement environment. ■ Can be set with the pinion attached Eliminates the troublesome removal work. Significantly improves the efficiency of testing and measurement. ■ Equipped with ＜620 mounting hole＞ (※Bonus feature) A 620-size hole is placed to reduce shaft wobble on the brush side. ※ This is not a correction function. ※ Please adjust the inner dimensions of the shaft hole yourself. ※ Please use it as part of your break-in efforts. ＜Product Notes＞ Since this product is made with a 3D printer, the mounting part may become slightly loose with repeated use. Layering marks, stringing, etc., which are unique to 3D printing, may occur, but there is no problem with strength or use. Due to the nature of copper terminals, they are prone to discoloration, so there may be some color changes. Specifications may change depending on the production lot.