From the Manufacturer

The Paul Components Neo Retro Cantilever Brake is designed to work with road levers and includes crossover cable and carrier.Designed to work with road levers, includes crossover cable and carrierItem SpecificationsColorBlackWeight154gMaterial6061-T6Brake Usage F/RRear,FrontPadKool-StopHub/Brake CompatibilityRim BrakeBrake TypeCantileverBrake Lever ActuationShort Pull,Short Pull DuraAce
Brake Lever Actuation: Long Pull, Brake Lever Actuation: Short Pull, Brake Usage F/R: Front, Rear, Brake Usage F/R: Rear, Front, Caliper Color: Black, Hub/Brake Compatibility: Rim Brake, Material: 661-T6, Pad: Kool-Stop, Weight: 154g
Paul Components
Model: 141801