Kool Stop Aero-Kool Disc Pads. Features: Aluminum backing with forged aluminum cooling pins reduce heat buildup and provide superior, lasting power Organic: high performance blend of organic materials with a top quantity resin Pad retraction springs included Compatible with Shimano Zee (BR-M640), Shimano Saint (BR-M820), Shimano Deore XT (BR-M8020) Specs: Fits: Shimano Saint/Zee Compound: organic
