2 x 1.5mm aluminum spacers 3 x 5mm aluminum spacers 1 x 15mm aluminum spacers • Wolftooth single speed spacer kit with locking ring can be used with or without stainless steel locking rings. Compatible with any HG free hub body Kit includes two 1.5mm spacers, three 5mm spacers, and one 15mm spacer. These spacers can be combined to create 45mm, 47.5mm, 49mm, 52mm, and 55mm chainlines. To achieve the above chainline, this spacer kit is only compatible with cogs with the base width of 4mm or larger. Product images are for reference only, actual product may vary in color and design. The color you see may differ from the actual product due to monitor settings and light conditions. In addition, please be aware that depending on the manufacturer's circumstances, the specifications and weight of the product may change due to production process and improvements.