Series R09 "Zipper" - zip-open along outer radius 1. “Zipper” fast opening and closing 2. Small pitch for low-noise, smooth operation 3. Protection against dirt and chips 4. iF-Design Award Winner 5. Lightweight 6. Zipper lids can be separated and joined at each link 7. For high acceleration 8. Mounting bracket with integrated strain relief 9. Small zip-open Energy Tube Inner widths Bi: 0.39 up to 1.97 (10 - 50 mm) Bending radii R: 1.89, 2.95, 3.94 (48, 75, 100 mm) Pitch: 0.79 (20 mm) per link = 16 links/ft (50/m) When to use series R09 energy tubes If fast installation using zipper lids is required If protection against dust and dirt is required If quick insertion of cables with preassembled connectors is required When not to use series R09 energy tube If opening of the link is not necessary E2 Micro, Series 08 If cable installation without opening lids is necessary Series E08 E-Z Chain