They have a steel backplate and come in two compounds: organic and sintered

Removable visor

These are tough wheels that look and sound amazing

there is a barrel adjuster on the remote for fine-tuning the cable tension

000" round

FUNN Zippa Lite BSA Chain Guide - Bottom Bracket Mount - 26-38T - Black Images Uploaded - Ready for Review They have a steel backplateThe Funn Zippa Lite BSA chainguide mounts using BSA threaded external BB cups and is ideal for 1x setups. It has a wide 26T to 38T range and is made from tough and light AL6061. The BSA is not compatible with oval chainrings. Features: AL6061 Full CNC 26T 38T chainring compatible Fits with BSA(External cup BB) 35g