Features: Simple Installation: just replace the regular screw nut into dust suction one. Premium Quality: made of aircraft-grade aluminum, which is durable and practical. Professional Device: big suction and low noise, reducing machine pressure. Working Principle: sucking up the dust and debris by rotating the nut itself, help to save energy and decrease cost when edge banding. Economical and Practical: dust are extracted in the process of operation, thus not only prolong the service of cutter tools, but also good for worker’s health. Specifications: Type: ER25 / ER32 (Optional) Color: Black, blue, red and gold (randomly sent) Material: Aluminum Item Size: ER25: 73.64 * 35.22mm / 2.90 * 1.39in ER32: 80 * 40mm / 3.15 * 1.57in Item Weight: 221g / 7.79oz Package Weight: 382g / 13.47oz Package Size: 13 * 13 * 5.6cm / 3.94 * 3.94 * 1.77in Packing List: 1 * Nut Note: The product will randomly sent in black, blue, red and gold.