These are replacement slipper clutch pads for item 22031-TD4 Slipper Clutch Set. Use this Hop-Up Option to keep your TD4 slipper clutch in peak condition. One set includes two slipper clutch pads. Low-friction resin parts are great for slippery surfaces. Compatible with TD4 and TD2 chassis cars equipped with Item 22031, and slipper clutches used on DB01 and TRF201 chassis cars.