The Black Diamond ATC-XP Belay Device and the Black Diamond Quicksilver Screwgate team up as a winning combination in this convenient package. The Black Diamond ATC-XP is a true variable-friction device, the ATC-XP maintains the silky-smooth feeding of the ATC but ups the braking power. For belaying and rappelling with 7.7-11 mm ropes, its designed with a smooth, low-friction side and a high-friction side with v-shaped grooves for three times more friction. An extended central web keeps biners and ropes properly oriented and helps reduce kinking. The Black Diamond Quicksilver Screwgate is versatile, lightweight, and affordable.