Problem Solvers Cable Doubler 1:2 One Lever for Two BrakesUse Problem Solvers Cable Doublers to customize and accommodate different braking applications and set ups. Especially handy for tricycles, bike polo, adaptive cycling applications, triathlon, tandems or other bike oddities. Works with all cable actuated braking systems Cables and housing sold separately Low profile machined aluminum tube hard anodized with Teflon allows low friction movement of the internal slider Machined end caps and internal