ORIGIN8

 Anti-chain drop device  Allows the front derailleur to be adjusted for strong downshifts If not using a front derailleur, the device may be used as a chain guide 28.6mm Black

 Anti-chain drop device  Allows the front derailleur to be adjusted for strong downshifts If not using a front derailleur, the device may be used as a chain guide 31.8mm Black

 Anti-chain drop device  Allows the front derailleur to be adjusted for strong downshifts If not using a front derailleur, the device may be used as a chain guide 34.9mm Black

 AL6061-T6 CNC machined alloy arm  E-Type mounting standard Adjustable roller with sealed bearing Fits 32-44 tooth chainrings Black

 Provides enhanced chain retention for all 1x drivetrain systems CNC machined AL6061 alloy mount with dual compound chain guide Co-molded composite and TPR guide plates greatly reduce noise from chain contact Compatible with 28-38T circular and 26-36T oval chainrings Boost compatible Easily adjustable Mounting hardware included D-Type Mount Black 53g

 Provides enhanced chain retention for all 1x drivetrain systems CNC machined AL6061 alloy mount with dual compound chain guide Co-molded composite and TPR guide plates greatly reduce noise from chain contact Compatible with 28-38T circular and 26-36T oval chainrings Boost compatible Easily adjustable Mounting hardware included E-Type Mount Black 34g

 Provides enhanced chain retention for all 1x drivetrain systems CNC machined AL6061 alloy mount with dual compound chain guide Co-molded composite and TPR guide plates greatly reduce noise from chain contact Compatible with 28-38T circular and 26-36T oval chainrings Boost compatible Easily adjustable Mounting hardware included ISCG-05 Mount Black 49g

 Converts a cassette hub to single speed Fits Shimano style cassette bodies Includes 8 spacers in various widths to adjust chain line Conical spacers provide increased cog support and stiffness Includes single-speed chain guide, as well as 16T and 18T 3/32` cogs Single Speed AL6061 Black

 Converts any multi-speed bike to a single speed Ceramic bearing pulley wheel for reduced resistance Mounts to frame derailleur hanger Adjusts for perfect chain tension Lightweight, minimalist design 107 grams Single Speed Black 107g

 Machined aluminum mounting arm Delrin (engineering grade thermoplastic) chain guide body Adjustable design Fits 32T to 38T chainrings Compatible with 1x drivetrain systems 1x 31.8-34.9mm Clamp On Black 88g

 Machined aluminum mounting arm Delrin (engineering grade thermoplastic) chain guide body Adjustable design Fits 32T to 38T chainrings Compatible with 1x drivetrain systems 1x 31.8-34.9mm Clamp On Black 80g

 Converts any multi-speed bike to a single speed Spring loaded design accommodates a wide range of cog sizes Mounts to frame derailleur hanger Adjusts for perfect chain tension Adjustable chain line Black