Features: 1.Fitment: It is replacement for Suntour or replacement for Simplex derailleurs that use 6mm, outside diameter, jockey wheel bolts. 2.Premium Material: The pulley conversion kit is made of steel material, which is durable and stable, and can be used for a long time. 3.Detailed Features: A new set of replacement rear puller guide wheels or pulleys. Fit your vintage replacement for Suntour. 4.Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability. 5.Easy Installation: Easy to install without complicated tools or drilling, no modification is required, convenient for using, save your efforts. Specification: Item Type: Wheel Pulley Conversion Kit_x000D_ Material: ABS, Steel_x000D_ Description: A new set of replacement rear puller guide wheels/pulleys, Fit your vintage replacement for Suntour (replacement for Honor, replacement for Seven (7), replacement for GT's, replacement for ARX, replacement for AR, replacement for Vgt and most other replacement for Suntour chain pickers as well as French-made replacement for Simplex Prestige, replacement for SX and replacement for LJ 5, replacement for PX 10 and replacement for OS, rear dermalleur_x000D_ Fitment:_x000D_ Replacement for Suntour or replacement for Simplex derailleurs that use 6 mm, outside diameter, replacement for jockey wheel bolts.