Note: No M4x2.5mm grub screws are included right now since they are currently out of stock. Will be included again when back in stock.
Custom 20T 2GT 5mm ID idler for live shaft idlers so you don't have to use two pulleys to make one yourself.
Each pulley comes with two 3mm long M4 set screws as standard. For monolith 2.5mm long grub screws are needed which are normally included but is currently out of stock.
