Compatible and Versatile: Two Wirings to Choose! The wiring with the WHITE connect head is for Longer RAY5, Laser B1 series, and 80% of engravers on the market. The wiring with the BLACK connect head is for the other 20% of engravers. NOTE: If the wiring with the WHlTE connect head doesn't work, try the wiring with the BLACK connect head! 360° Auto Rotating Roller: Unlock endless possibilities with the innovative 360° auto-rotating roller, allowing you to effortlessly engrave on irregular cylindrical objects like wine glasses, mugs, and more. Make your creations truly unique with personalized engravings Stable support and accurate positioning: Rotating drum upgrade kit's powerful support and accurate positioning system, enjoy precise and stable engraving. Say goodbye to mistakes and get perfect results every time ADJUSTABLE HEIGHT RANGE: The adjustable height range easily accommodates objects of different sizes, providing the flexibility you need for a variety of projects. From small trinkets to tall vases, this rotating drum upgrade kit has you covered DURABLE AND RELIABLE: The rotating drum upgrade kit is built to last, ensuring long-lasting performance and reliability. It is made from high-quality materials and can withstand continuous use, making it an ideal tool for professionals and amateurs alike. › See more product details